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

21491451 (number)

21491451 is an odd 8-digits composite number following 21491450 and preceding 21491452. In scientific notation, it is written as 2.1491451 × 10^7. The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors. There are 12773376 positive integers (up to 21491451) that are relatively prime to 21491451.

Interesting facts

21491451 has 8 divisors, whose sum is 22773520
The reverse of 21491451 is 15419412
Previous prime number is 19

Basic properties

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

Name

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

Notation

Scientific notation	2.1491451 × 10^7
Engineering notation	2.1491451 × 10^6

Prime Factorization of 21491451

Prime Factorization 153 × 19 × 7393

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21491451	Product of the distinct prime numbers

The prime factorization of 21491451 is 153 × 19 × 7393. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 10, 63, 70, 268, 835, 216, 5645, 32861, 9051, 260011, 622331, 4946615, 1648956, 26541152, 38477870, 217661311, 643993128, 1716603895, 1704316280

Basic calculations (n = 21491451)

Multiplication

n×y

n×2	42982902
n×3	64474353
n×4	85965804
n×5	107457255

Division

n÷y

n÷2	10745725.5
n÷3	7163817
n÷3	5372862.75
n÷5	4298290.2

Exponentiation

n^y

n²	461882466085401
n³	9.9265243876336E+21
n⁴	2.1333541247713E+29
n⁵	4.5848875638171E+36

Nth Root

^y√n

²√n	4635.887293712
³√n	278.02802798688
⁴√n	68.087350467704
⁵√n	29.272050626152

Divisors of 21491451

1, 19, 153, 2907, 7393, 140467, 1131129, 21491451

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	-21491450	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 21491451 can be divided by 8 positive divisors. The sum of these divisors (counting 21491451) is 1, the average is 0.125.

Base conversion 21491451

Base	System	Value
2	Binary	1010001111110111011111011
3	Ternary	1111102212201200
4	Quaternary	1101332323323
5	Quinary	21000211301
6	Senary	2044345243
8	Octal	121767373
10	Decimal	21491451
12	Duodecimal	7245223
16	Hexadecimal	147eefb
20	Vigesimal	6e68cb
36	Base36	csmwr

Cryptographic Hash Functions

md5	81ec36495482f6f92adf80864e363b31
sha1	8043f52ed5a6484db583560a9a6a3fa02709f73f
sha256	4c5969c992dd9c621f4af24a12745b14a4e17395f6999ceb7fb27be177b9a711
sha512	c0c50366b151e58806539c578a169186759ecc1870d06b02e9f88ce023247290257052ce5353a4c736d4cee6c7f36f3a7dcbb60401eeb952a458d977d1e62b2f
ripemd-160	a38a1c175c075ef1512a91fac07be98f3a08c602

21491451 as geometric shapes

Circle

Radius = n

Diameter	42982902
Circumference	135034769.15317
Area	1.4510465622758E+15

Sphere

Radius = n

Volume	4.1580128122493E+22
Surface area	5.8041862491033E+15
Circumference	135034769.15317

Square

Length = n

Perimeter	85965804
Area	461882466085401
Diagonal	30393501.479277

Cube

Length = n

Surface area	2771294796512406
Volume	9.9265243876336E+21
Space diagonal	37224285.060377

Equilateral Triangle

Length = n

Perimeter	64474353
Area	2.0000097459628E+14
Altitude	18612142.530188

Triangular Pyramid

Length = n

Surface area	2.0000097459628E+14
Volume	1.1698521180182E+21
Height	10131167.159759