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

21091491 (number)

21091491 is an odd 8-digits composite number following 21091490 and preceding 21091492. In scientific notation, it is written as 2.1091491 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 12 positive divisors. There are 14034384 positive integers (up to 21091491) that are relatively prime to 21091491.

Interesting facts

21091491 has 12 divisors, whose sum is 30523168
The reverse of 21091491 is 19419012
Previous prime number is 3823

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9

Name

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

Notation

Scientific notation	2.1091491 × 10^7
Engineering notation	2.1091491 × 10^6

Prime Factorization of 21091491

Prime Factorization 3 × 3 × 3823 × 613

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	7030497	Product of the distinct prime numbers

The prime factorization of 21091491 is 3 × 3 × 3823 × 613. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 10, 46, 52, 625, 768, 9068, 8942, 85068, 98426, 548645, 680705, 2839129, 6767961, 10718084, 55257946, 282359105, 562814224, 4152902216, 4686574114

Basic calculations (n = 21091491)

Multiplication

n×y

n×2	42182982
n×3	63274473
n×4	84365964
n×5	105457455

Division

n÷y

n÷2	10545745.5
n÷3	7030497
n÷3	5272872.75
n÷5	4218298.2

Exponentiation

n^y

n²	444850992603081
n³	9.3825707068289E+21
n⁴	1.9789240561995E+29
n⁵	4.1738458921014E+36

Nth Root

^y√n

²√n	4592.5473323636
³√n	276.29249866557
⁴√n	67.768335765043
⁵√n	29.162278717137

Divisors of 21091491

1, 3, 9, 613, 1839, 3823, 5517, 11469, 34407, 2343499, 7030497, 21091491

12 divisors

τ	Total Divisors	12	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21091490	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.083333333333333	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	12	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21091491 can be divided by 12 positive divisors. The sum of these divisors (counting 21091491) is 1, the average is 0.083333333333333.

Base conversion 21091491

Base	System	Value
2	Binary	1010000011101010010100011
3	Ternary	1110200120002100
4	Quaternary	1100131102203
5	Quinary	20344411431
6	Senary	2032021443
8	Octal	120352243
10	Decimal	21091491
12	Duodecimal	7091883
16	Hexadecimal	141d4a3
20	Vigesimal	6bg8eb
36	Base36	ck2ar

Cryptographic Hash Functions

md5	703c5666f4fbc8429e8911211ca65513
sha1	90c1010fabdc213ad64eef85831960e7c2f92c9b
sha256	5d7504a510d6e7de1d0dd7760c163b95cf96fdb58b51cca7e1894d7e66e83b9b
sha512	dc3b247db1f26145fc38b9415956cb2f959fa9cd8986d0834ccf04825d0d05021f4ba68e297e5a38808c4d5a6c565df3524de2f7022fd52a27711564e63c1d3d
ripemd-160	51af806f077ba8d10a38d7eb3cc5840bb82f8964

21091491 as geometric shapes

Circle

Radius = n

Diameter	42182982
Circumference	132521746.35771
Area	1.397540610304E+15

Sphere

Radius = n

Volume	3.9301620272481E+22
Surface area	5.5901624412159E+15
Circumference	132521746.35771

Square

Length = n

Perimeter	84365964
Area	444850992603081
Diagonal	29827872.62287

Cube

Length = n

Surface area	2669105955618486
Volume	9.3825707068289E+21
Space diagonal	36531534.019382

Equilateral Triangle

Length = n

Perimeter	63274473
Area	1.926261302465E+14
Altitude	18265767.009691

Triangular Pyramid

Length = n

Surface area	1.926261302465E+14
Volume	1.1057465619602E+21
Height	9942624.2076234