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

21491431 (number)

21491431 is an odd 8-digits composite number following 21491430 and preceding 21491432. In scientific notation, it is written as 2.1491431 × 10^7. The sum of its digits is 25. It has a total of 3 prime factors and 8 positive divisors. There are 19792512 positive integers (up to 21491431) that are relatively prime to 21491431.

Interesting facts

21491431 has 8 divisors, whose sum is 23198000
The reverse of 21491431 is 13419412
Previous prime number is 499

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 25
Digital Root 7

Name

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

Notation

Scientific notation	2.1491431 × 10^7
Engineering notation	2.1491431 × 10^6

Prime Factorization of 21491431

Prime Factorization 13 × 499 × 3313

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21491431	Product of the distinct prime numbers

The prime factorization of 21491431 is 13 × 499 × 3313. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 3, 29, 66, 445, 759, 28, 7857, 42050, 58085, 829785, 755147, 1208094, 3112762, 34252042, 14060688, 420565313, 468569931, 2618043345, 2017807270

Basic calculations (n = 21491431)

Multiplication

n×y

n×2	42982862
n×3	64474293
n×4	85965724
n×5	107457155

Division

n÷y

n÷2	10745715.5
n÷3	7163810.3333333
n÷3	5372857.75
n÷5	4298286.2

Exponentiation

n^y

n²	461881606427761
n³	9.9264966747114E+21
n⁴	2.1333461835629E+29
n⁵	4.5848662303155E+36

Nth Root

^y√n

²√n	4635.8851366271
³√n	278.02794174232
⁴√n	68.087334627132
⁵√n	29.272045178021

Divisors of 21491431

1, 13, 499, 3313, 6487, 43069, 1653187, 21491431

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21491430	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21491431 can be divided by 8 positive divisors. The sum of these divisors (counting 21491431) is 1, the average is 0.125.

Base conversion 21491431

Base	System	Value
2	Binary	1010001111110111011100111
3	Ternary	1111102212200221
4	Quaternary	1101332323213
5	Quinary	21000211211
6	Senary	2044345211
8	Octal	121767347
10	Decimal	21491431
12	Duodecimal	7245207
16	Hexadecimal	147eee7
20	Vigesimal	6e68bb
36	Base36	csmw7

Cryptographic Hash Functions

md5	a9fe80995ed89f679828bca5248d456a
sha1	e15f3410dbce12afa4f2fd0e2adaf7d5f0ac43b1
sha256	e148afe1cc3581480c0347c52bc71774f01956f08ecdce18a6f943fc32e78697
sha512	e5c85ad1b200ced0c38316f7dd1f4aa7f0f16755f4a576c7e3ec8f6c3a5ef0284cb0d5a98286b63182f324227f6de41a7d4f21f63cb584aa17a00c8158ecd9eb
ripemd-160	9bd373e97a50911f5b7fe7b5cf78086908659dbb

21491431 as geometric shapes

Circle

Radius = n

Diameter	42982862
Circumference	135034643.48946
Area	1.4510438615817E+15

Sphere

Radius = n

Volume	4.1580012038876E+22
Surface area	5.8041754463268E+15
Circumference	135034643.48946

Square

Length = n

Perimeter	85965724
Area	461881606427761
Diagonal	30393473.195006

Cube

Length = n

Surface area	2771289638566566
Volume	9.9264966747114E+21
Space diagonal	37224250.419361

Equilateral Triangle

Length = n

Perimeter	64474293
Area	2.000006023536E+14
Altitude	18612125.20968

Triangular Pyramid

Length = n

Surface area	2.000006023536E+14
Volume	1.169848852019E+21
Height	10131157.731669