# 20

2

6

42

20 = 2 × 2 × 5

Factor Count
2 2
5 1

400

8000

## Square root of 20

4.47213595499957961010295548476279...

## Cube root of 20

2.71441761659490632396796172542963...

210

## Reciprocal of 20

0.0500000000000000

10100

5

## Octal of 20

24

14

 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

QR20 (sequence)

32

8

4

0

## Properties of 20

Properties of the number 20: 20 has 6 divisors. The divisors of 20 are 1, 2, 4, 5, 10, 20 and the sum of them is 42. The factorization of 20 is 2 × 2 × 5. The square and cube of 20 are 400 and 8000 respectively. The square root and cube root of 20 are 4.47213595499957961010295548476279... and 2.71441761659490632396796172542963.... The binary, octal, hexadecimal of 20 are 10100, 24, 14. 20 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 20

0.91294525072762766626510710921139...

## cos 20

0.40808206181339196083612819165864...

## tan 20

2.23716094422474265357436706835870...

## sin 20°

0.34202014332566871290808308003761...

## cos 20°

0.93969262078590842790504211734515...

## tan 20°

0.36397023426620234154427180328639...

## log 20

2.99573227355399085425347038835753...

## log10 20

1.30102999566398125352861825376749...

## log2 20

4.32192809488736262579777758219279...