Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

20171981 (number)

20171981 is an odd 8-digits prime number following 20171980 and preceding 20171982. In scientific notation, it is written as 2.0171981 × 10^7. The sum of its digits is 29. It has a total of 1 prime factors and 2 positive divisors. There are 20171980 positive integers (up to 20171981) that are relatively prime to 20171981.

Interesting facts

20171981 has 2 divisors, whose sum is 20171982
The reverse of 20171981 is 18917102
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2

Name

Name	twenty million one hundred seventy-one thousand nine hundred eighty-one

Notation

Scientific notation	2.0171981 × 10^7
Engineering notation	2.0171981 × 10^6

Prime Factorization of 20171981

Prime Factorization 20171981

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	20171981	Product of the distinct prime numbers

The prime factorization of 20171981 is 20171981. Since it has a total of 1 prime factors.

Most popular turbo-numbers

3, 5, 40, 57, 782, 433, 3355, 6123, 77817, 82073, 767517, 373173, 2139895, 7202681, 84910034, 67806310, 437298357, 794999739, 1121835495, 7230773331

Basic calculations (n = 20171981)

Multiplication

n×y

n×2	40343962
n×3	60515943
n×4	80687924
n×5	100859905

Division

n÷y

n÷2	10085990.5
n÷3	6723993.6666667
n÷3	5042995.25
n÷5	4034396.2

Exponentiation

n^y

n²	406908817464361
n³	8.2081569346236E+21
n⁴	1.6557478573024E+29
n⁵	3.3399714318296E+36

Nth Root

^y√n

²√n	4491.3228563531
³√n	272.21758919105
⁴√n	67.017332506995
⁵√n	28.903451702402

Divisors of 20171981

1, 20171981

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	20171982	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	10085991	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	4491.3229676789	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999008526	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20171981 can be divided by 2 positive divisors. The sum of these divisors (counting 20171981) is 20171982, the average is 10085991.

Base conversion 20171981

Base	System	Value
2	Binary	1001100111100110011001101
3	Ternary	1101221211202102
4	Quaternary	1030330303031
5	Quinary	20131000411
6	Senary	2000204445
8	Octal	114746315
10	Decimal	20171981
12	Duodecimal	6909725
16	Hexadecimal	133cccd
20	Vigesimal	6619j1
36	Base36	c0cst

Cryptographic Hash Functions

md5	23853bbbf40c01d9980b26661abe43e1
sha1	b896f596d6af66b35077e5f2ce21f770767c9006
sha256	d117e54e70a0864a31d30837dee6d680772712ccd8b3d0e01d8655e4b3fd7520
sha512	20c9e36a3f31efac24f6e8e912561f33d7fb0facae66526e771dcdb100a6ba2af344f7b035529280745b742bff3737a48d8c5bf3012edb3844d2ef0067d359c7
ripemd-160	4f8919e99690624d7cfbef04260621019f790d63

20171981 as geometric shapes

Circle

Radius = n

Diameter	40343962
Circumference	126744294.63591
Area	1.2783417516269E+15

Sphere

Radius = n

Volume	3.4382247367101E+22
Surface area	5.1133670065078E+15
Circumference	126744294.63591

Square

Length = n

Perimeter	80687924
Area	406908817464361
Diagonal	28527489.110132

Cube

Length = n

Surface area	2441452904786166
Volume	8.2081569346236E+21
Space diagonal	34938895.981314

Equilateral Triangle

Length = n

Perimeter	60515943
Area	1.7619668647401E+14
Altitude	17469447.990657

Triangular Pyramid

Length = n

Surface area	1.7619668647401E+14
Volume	9.6734057158595E+20
Height	9509163.0367108