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

21491491 (number)

21491491 is an odd 8-digits composite number following 21491490 and preceding 21491492. In scientific notation, it is written as 2.1491491 × 10^7. The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors. There are 18421272 positive integers (up to 21491491) that are relatively prime to 21491491.

Interesting facts

21491491 has 4 divisors, whose sum is 24561712
The reverse of 21491491 is 19419412
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4

Name

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

Notation

Scientific notation	2.1491491 × 10^7
Engineering notation	2.1491491 × 10^6

Prime Factorization of 21491491

Prime Factorization 7 × 3070213

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21491491	Product of the distinct prime numbers

The prime factorization of 21491491 is 7 × 3070213. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 6, 1, 46, 462, 372, 1143, 3831, 88382, 54285, 274795, 192022, 2083267, 945842, 41967599, 31839882, 191004704, 452599609, 6586711614, 2937765021

Basic calculations (n = 21491491)

Multiplication

n×y

n×2	42982982
n×3	64474473
n×4	85965964
n×5	107457455

Division

n÷y

n÷2	10745745.5
n÷3	7163830.3333333
n÷3	5372872.75
n÷5	4298298.2

Exponentiation

n^y

n²	461884185403081
n³	9.9265798136326E+21
n⁴	2.1333700072547E+29
n⁵	4.5849302310584E+36

Nth Root

^y√n

²√n	4635.8916078787
³√n	278.02820047584
⁴√n	68.087382148814
⁵√n	29.272061522402

Divisors of 21491491

1, 7, 3070213, 21491491

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	-21491490	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 21491491 can be divided by 4 positive divisors. The sum of these divisors (counting 21491491) is 1, the average is 0.25.

Base conversion 21491491

Base	System	Value
2	Binary	1010001111110111100100011
3	Ternary	1111102212210011
4	Quaternary	1101332330203
5	Quinary	21000211431
6	Senary	2044345351
8	Octal	121767443
10	Decimal	21491491
12	Duodecimal	7245257
16	Hexadecimal	147ef23
20	Vigesimal	6e68eb
36	Base36	csmxv

Cryptographic Hash Functions

md5	a94ab2b14b79dc4f3e65273752b71ecb
sha1	1359acac826f8533729194696a59ca92da3d6835
sha256	1bcdf74b21d6822141be6126d64586e2766298db50ab09b07fc01e5efc2959a6
sha512	7186e26de8eb7a4b75f266ef20ac4b221fb7a82ee66ae6b80cff329043fdcab6ae17435ae0524e081c38abe6481658df5b6ead8400671747a160d0176beca2d2
ripemd-160	ff5c2a48824d3234ec749b60ea54af2c5aaab135

21491491 as geometric shapes

Circle

Radius = n

Diameter	42982982
Circumference	135035020.48058
Area	1.4510519636716E+15

Sphere

Radius = n

Volume	4.1580360290375E+22
Surface area	5.8042078546865E+15
Circumference	135035020.48058

Square

Length = n

Perimeter	85965964
Area	461884185403081
Diagonal	30393558.047819

Cube

Length = n

Surface area	2771305112418486
Volume	9.9265798136326E+21
Space diagonal	37224354.342409

Equilateral Triangle

Length = n

Perimeter	64474473
Area	2.0000171908267E+14
Altitude	18612177.171205

Triangular Pyramid

Length = n

Surface area	2.0000171908267E+14
Volume	1.1698586500349E+21
Height	10131186.01594