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

21491731 (number)

21491731 is an odd 8-digits composite number following 21491730 and preceding 21491732. In scientific notation, it is written as 2.1491731 × 10^7. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 21362872 positive integers (up to 21491731) that are relatively prime to 21491731.

Interesting facts

21491731 has 4 divisors, whose sum is 21620592
The reverse of 21491731 is 13719412
Previous prime number is 167

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

Name	twenty-one million four hundred ninety-one thousand seven hundred thirty-one

Notation

Scientific notation	2.1491731 × 10^7
Engineering notation	2.1491731 × 10^6

Prime Factorization of 21491731

Prime Factorization 167 × 128693

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21491731	Product of the distinct prime numbers

The prime factorization of 21491731 is 167 × 128693. Since it has a total of 2 prime factors.

Most popular turbo-numbers

1, 8, 99, 35, 309, 867, 8072, 5124, 15931, 15281, 598968, 911452, 2996829, 5861354, 16358949, 1814438, 17437687, 268536000, 4087807355, 2413721860

Basic calculations (n = 21491731)

Multiplication

n×y

n×2	42983462
n×3	64475193
n×4	85966924
n×5	107458655

Division

n÷y

n÷2	10745865.5
n÷3	7163910.3333333
n÷3	5372932.75
n÷5	4298346.2

Exponentiation

n^y

n²	461894501376361
n³	9.9269123739599E+21
n⁴	2.1334653040172E+29
n⁵	4.585186241177E+36

Nth Root

^y√n

²√n	4635.9174927947
³√n	278.02923540512
⁴√n	68.087572234547
⁵√n	29.272126899564

Divisors of 21491731

1, 167, 128693, 21491731

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21491730	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491731 can be divided by 4 positive divisors. The sum of these divisors (counting 21491731) is 1, the average is 0.25.

Base conversion 21491731

Base	System	Value
2	Binary	1010001111111000000010011
3	Ternary	1111102220010001
4	Quaternary	1101333000103
5	Quinary	21000213411
6	Senary	2044350431
8	Octal	121770023
10	Decimal	21491731
12	Duodecimal	7245417
16	Hexadecimal	147f013
20	Vigesimal	6e696b
36	Base36	csn4j

Cryptographic Hash Functions

md5	d12ae97d34957049b7848420a9dee926
sha1	8a29b0a617486fee2de56a268f9766e60f438fdb
sha256	bca4cbb74b937f34c2648d77d51ff5968f659a2b7e2ed174daf2772a15de69c9
sha512	96aca74bbbb8ca883e2293d594028b43cc9a869f97129baaa213e3364e7fcb3a110ef3c6c1f498c037bab3eea2181fc9307c8131702d69ac99a81fbce970034d
ripemd-160	33c38149af9fb2870680997ee46bdf11963b1e13

21491731 as geometric shapes

Circle

Radius = n

Diameter	42983462
Circumference	135036528.44506
Area	1.4510843722575E+15

Sphere

Radius = n

Volume	4.1581753315816E+22
Surface area	5.80433748903E+15
Circumference	135036528.44506

Square

Length = n

Perimeter	85966924
Area	461894501376361
Diagonal	30393897.459074

Cube

Length = n

Surface area	2771367008258166
Volume	9.9269123739599E+21
Space diagonal	37224770.034603

Equilateral Triangle

Length = n

Perimeter	64475193
Area	2.0000618603014E+14
Altitude	18612385.017302

Triangular Pyramid

Length = n

Surface area	2.0000618603014E+14
Volume	1.1698978426453E+21
Height	10131299.153025