Welcome to the dictionary of numbers

This page will tell you almost everything that it is necessary to know about number: 7
Let's begin with a basic information:

Number 7

Structure

Number 7 has 1 figures which are brought to 7. In English it sounds so: seven. Besides, the numbers representing number 7 are: seven.
Number 7 - decimal number which means that on the basis 10. 7 can be also presented in different bases, such as the Binary system of calculation also looks: 111, the Octal system of an calculation also, also looks as and 16, in Hexadecimal system of calculation and looks as follows: . 7 The number in the triple system of reference looks like: in fourfold: 13 in pyatirichoy: in shestirichnoy: 11 in the septenary: . Also the number of number systems in from 4 to 34.

Characteristic

Number 7 is Positive and Odd. His inverse number 0,14285714285714 and negative number -7. Number 7 can be divided on 1, 7 without the rest. Besides, it is not an ideal square, and it a prime number. Now let's use trigonometrical functions. By means of sinusoidal function: Sin(7°) gives 0,657, using function of the Cosine of the cos function (7°) gives 0,754 and through the Tangent the tan function(7°) is made by 0,871. Arctangent number is 7 1,429, area of ​​a circle of radius equal to 7 153,938 exponent in powers of 7 is 1096,633.
Previous number: 6
Binary (base two): 111
Number (base 4): 13
Number (base 6): 11
Number (base 8): 7
Number (base 10): 7
Number (base 12): 7
Number (base 14): 7
Number (base 16): 7
Number (base 18): 7
Number (base 20): 7
Number (base 22): 7
Number (base 24): 7
Number (base 26): 7
Number (base 28): 7
Number (base 30): 7
Number (base 32): 7
Number (base 34): 7
Inverse: 0,14285714285714
Counter: -7
Divisible by: 1, 7
Factorial number: 5040
Number of digits: 1
Sum of digits: 7
Product of digits: 7
7 radian is equal (degree): 401,07
Next number: 8
Number (base 3): 21
Number (base 5): 12
Number (base 7): 10
Number (base 9): 7
Number (base 11): 7
Number (base 13): 7
Number (base 15): 7
Number (base 17): 7
Number (base 19): 7
Number (base 21): 7
Number (base 23): 7
Number (base 25): 7
Number (base 27): 7
Number (base 29): 7
Number (base 31): 7
Number (base 33): 7
Even / Odd: Odd
Unix Timestamp: Thu Jan 01 00:00:07 1970
Perfect square: NO
Prime: YES
Positive / Negative: Positive
English: seven
English digits: seven
Sin: 0,657
Cos: 0,754
Tan: 0,871
Atan: 1,429
Area of a circle r= 7: 153,938
exhibitor (degree 7): 1096,633