# 40

4

8

90

## Factorization

40 = 2 × 2 × 2 × 5

Factor Count
2 3
5 1

1600

64000

## Square root of 40

6.32455532033675904557412650319748...

## Cube root of 40

3.41995189335339366820676332281437...

820

## Reciprocal of 40

0.0250000000000000

101000

6

## Octal of 40

50

28

 Prime number No Hexagonal number No Perfect number No Deficient number No Abundant number No Mersenne number No Harshad number Yes Harmonic divisor number No

QR40 (sequence)

57

16

4

0

## Properties of 40

Properties of the number 40: 40 has 8 divisors. The divisors of 40 are 1, 2, 4, 5, 8, 10, 20, 40 and the sum of them is 90. The factorization of 40 is 2 × 2 × 2 × 5. The square and cube of 40 are 1600 and 64000 respectively. The square root and cube root of 40 are 6.32455532033675904557412650319748... and 3.41995189335339366820676332281437.... The binary, octal, hexadecimal of 40 are 101000, 50, 28. 40 is not a prime number, not hexagonal number, not perfect number, not deficient number, not Mersenne number, not Mersenne number, Harshad number, not harmonic divisor number.

## sin 40

0.74511316047934883499692659825087...

## cos 40

-0.66693806165226188209516067217919...

## tan 40

-1.11721493092389589918411729740910...

## sin 40°

0.64278760968653925189641995530110...

## cos 40°

0.76604444311897801345168090847437...

## tan 40°

0.83909963117727992543137816028320...

## log 40

3.68887945411393625150253683386836...

## log10 40

1.60205999132796250705723650753498...

## log2 40

5.32192809488736262579777758219279...