|
Number: 7 |
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| Facts about the number: 7 is the approximate number of years in the lifespan of Irish Wolfhound dogs. 7 is the figurative number of seas. 7 is the number of estimated objects that can be simultaneously held in human working memory. 7 is the number of seconds it takes "Superman: Escape from Krypton" roller coaster to go from 0 to 100 miles per hour. 7 is the number of main stars in the constellations of the Big Dipper and Orion. 7 is the maximum number of times a letter-sized paper can be folded in half. 7 is the lowest number that cannot be represented as the sum of the squares of three integers. 7 is the sum of any two opposite sides on a standard six-sided die. 7 is the smallest number of sides of a regular polygon that is not constructible by straightedge and compass. 7 is the only dimension, besides the familiar 3, in which a vector cross product can be defined. |
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| The number of digits in the number: \( n \): \( d = \lfloor \log_{10}(n) \rfloor + 1 \) |
1 | |
| Sum of the digits: \( n \): \( S = \sum_{i=1}^{k} d_i \) |
7 | |
| Reverse number: \( \text{Reverse}(n) = \sum_{i=1}^{k} d_i \cdot 10^{k-i} \) |
0.14285714285714 | |
| Binary number system: \( n = \sum_{i=0}^{k-1} d_i \cdot 2^i \) |
1100011110000110100110110110110111011010001 | |
| Hexadecimal number system: \( n = \sum_{i=0}^{k-1} d_i \cdot 16^i \) |
63c34db6ed1 | |
| Parity of the number: \( \text{Parity}(n) = n \mod 2 \) |
odd | |
| Simplicity of the number: \(\text{IsPrime}(n) = n > 1 \land \forall d \in [2, \sqrt{n}], n \mod d \neq 0\) |
true | |
| The square root: \(\sqrt{n} = n^{\frac{1}{2}}\) |
2.6457513110646 | |
| The factorial of the number: \( n!=n \times (n-1) \times (n-2) \times \ldots \times 2 \times 1 \) |
5040 | |
| The sign of the number: \(\text{sign}(n) = \begin{cases} 1, & \text{if } n>0 \ 0, & \text{if } n=0 \ -1, & \text{if } n<0 \end{cases}\) |
+ | |
| The nearest multiple of 10: \(\text{10}(n) = 10 \times \left\lfloor \frac{n + 5}{10} \right\rfloor\) |
0 | |
| The nearest multiple of 100: \(\text{100}(n) = 100 \times \left\lfloor \frac{n + 50}{100} \right\rfloor\) |
0 | |
| Sine: \(\sin(x) = \sum_{n=0}^{\infty} \frac{(-1)^n x^{2n+1}}{(2n+1)!}\) |
0.65698659871879 | |
| Cosine: \(\cos(x) = \sum_{n=0}^{\infty} \frac{(-1)^n x^{2n}}{(2n)!}\) |
0.7539022543433 | |
| Tangent: \(\tan(x) = \sum_{n=0}^{\infty} \frac{(-1)^n 2^{2n} (2^{2n} - 1) B_{2n} x^{2n-1}}{(2n)!}\) |
0.87144798272432 | |
| The square of the number: \(\text{square}(n) = n^2\) |
49 | |
| Cubic root: \(\text{}(n) = \sqrt[3]{n}\) |
1.9129311827724 | |
| Natural logarithm: \(\ln(ab) = \ln(a) + \ln(b)\) |
1.9459101490553 | |
| Common logarithm: \(\log_{10}(ab) = \log_{10}(a) + \log_{10}(b)\) |
0.84509804001426 | |
| All divisors of a number: \( D(n) = \{ d \in \mathbb{Z}^+ : n \mod d = 0 \} \) |
1, 7 | |
| Base64: | Ni44NTU2NTQ2MDA0MDE= | |
| SHA1: | 2ed1daecc5c96903d261e87931ed7dd3391fd20c | |
| MD5: | 2f5b1793115e9c7353ecbfb3d012ad64 | |
| Converts a number to a Roman representation: | VII | |
| Converting the number of seconds to days, hours, minutes and seconds: | days: 0, hours: 0, minutes: 0, seconds: 7. | |
| Converts a number to a date in UNIX time format: | ||
| Chinese: | 1970 月 1 星期四 | |
| Spanish: | 1970 Enero 1 Jueves | |
| English: | 1970 January 1 Thursday | |
| Hindi: | 1970 जनवरी 1 गुरुवार | |
| Arab: | 1970 يناير 1 الخميس | |
| Bengal: | 1970 জানুয়ারী 1 বৃহস্পতিবার | |
| Portuguese: | 1970 Janeiro 1 Quinta-feira | |
| Russian: | 1970 Январь 1 Четверг | |
| Japanese: | 1970 一月 1 木曜日 | |
| Lahnda: | 1970 جنوری 1 جمعرات | |
| Marathi: | 1970 जानेवारी 1 गुरुवार | |
| Telugu: | 1970 జనవరి 1 గురువారం | |
| Malay: | 1970 Januari 1 Khamis | |
| Turkish: | 1970 Ocak 1 Perşembe | |
| Korean: | 1970 1월 1 목요일 | |
| French: | 1970 Janvier 1 Jeudi | |
| German: | 1970 Januar 1 Donnerstag | |
| Vietnamese: | 1970 Tháng Một 1 Thứ năm | |
| Tamil: | 1970 ஜனவரி 1 வியாழக்கிழமை | |
| Urdu: | 1970 جنوری 1 جمعرات | |
| Javanese: | 1970 Januari 1 Kemis | |
| Italian: | 1970 Gennaio 1 Giovedì | |
| Persian: | 1970 ژانویه 1 پنجشنبه | |
| Gujaratis: | 1970 જાન્યુઆરી 1 ગુરુવાર | |
| Length: | ||
| 7 kilometers = 7,000.00 meters | ||
| 7 miles = 11,265.38 meters | ||
| 7 feet = 2.13 meters | ||
| 7 inches = 0.18 meters | ||
| 7 yards = 6.40 meters | ||
| 7 meters = 0.01 kilometers | ||
| 7 meters = 0.00 miles | ||
| 7 meters = 22.97 feet | ||
| 7 meters = 275.59 inches | ||
| 7 meters = 7.66 yards | ||
| Weight: | ||
| 7 pounds = 3.18 kilograms | ||
| 7 grams = 0.01 kilograms | ||
| 7 ounces = 0.20 kilograms | ||
| 7 tons = 6,350.30 kilograms | ||
| 7 kilograms = 15.43 pounds | ||
| 7 kilograms = 7,000.00 grams | ||
| 7 kilograms = 246.92 ounces | ||
| 7 kilograms = 0.01 tons | ||
| Volume: | ||
| 7 gallons = 26.50 liters | ||
| 7 milliliters = 0.01 liters | ||
| 7 cubic meters = 7,000.00 liters | ||
| 7 liters = 1.85 gallons | ||
| 7 liters = 7,000.00 milliliters | ||
| 7 liters = 0.01 cubic meters | ||
| Area: | ||
| 7 acres = 28,328.02 square meters | ||
| 7 hectares = 70,000.00 square meters | ||
| 7 square feet = 0.65 square meters | ||
| 7 square inches = 0.00 square meters | ||
| 7 square meters = 0.00 acres | ||
| 7 square meters = 0.00 hectares | ||
| 7 square meters = 75.35 square feet | ||
| 7 square meters = 10,850.02 square inches | ||
| Temperature: | ||
| 7 celsius = 44.60 fahrenheit | ||
| 7 celsius = 280.15 kelvin | ||
| 7 fahrenheit = -13.89 celsius | ||
| 7 fahrenheit = 259.26 kelvin | ||
| 7 kelvin = -266.15 celsius | ||
| 7 kelvin = -447.07 fahrenheit | ||
| Time: | ||
| 7 seconds = 0.12 minutes | ||
| 7 seconds = 0.00 hours | ||
| 7 seconds = 0.00 days | ||
| 7 minutes = 420.00 seconds | ||
| 7 minutes = 0.12 hours | ||
| 7 minutes = 0.00 days | ||
| 7 hours = 25,200.00 seconds | ||
| 7 hours = 420.00 minutes | ||
| 7 hours = 0.29 days | ||
| 7 days = 604,800.00 seconds | ||
| 7 days = 10,080.00 minutes | ||
| 7 days = 168.00 hours | ||
| Energy: | ||
| 7 joules = 1.67 calories | ||
| 7 joules = 0.01 kilojoules | ||
| 7 joules = 0.00 watt hours | ||
| 7 calories = 29.29 joules | ||
| 7 calories = 0.03 kilojoules | ||
| 7 kilojoules = 7,000.00 joules | ||
| 7 kilojoules = 1,673.04 calories | ||
| 7 watt hours = 25,200.00 joules | ||
| 7 watt hours = 25.20 kilojoules | ||
| Information: | ||
| 7 bytes = 0.01 kilobytes | ||
| 7 kilobytes = 7,168.00 bytes | ||
| 7 kilobytes = 0.01 megabytes | ||
| 7 megabytes = 7,168.00 kilobytes | ||
| 7 megabytes = 0.01 gigabytes | ||
| 7 gigabytes = 7,168.00 megabytes | ||
| 7 gigabytes = 0.01 terabytes | ||
| 7 terabytes = 7,168.00 gigabytes | ||