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

21081531 (number)

21081531 is an odd 8-digits composite number following 21081530 and preceding 21081532. In scientific notation, it is written as 2.1081531 × 10^7. The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors. There are 14041512 positive integers (up to 21081531) that are relatively prime to 21081531.

Interesting facts

21081531 has 8 divisors, whose sum is 28134400
The reverse of 21081531 is 13518012
Previous prime number is 1399

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3

Name

Name	twenty-one million eighty-one thousand five hundred thirty-one

Notation

Scientific notation	2.1081531 × 10^7
Engineering notation	2.1081531 × 10^6

Prime Factorization of 21081531

Prime Factorization 3 × 1399 × 5023

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21081531	Product of the distinct prime numbers

The prime factorization of 21081531 is 3 × 1399 × 5023. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 4, 70, 36, 672, 232, 3712, 4013, 15358, 8623, 71700, 402558, 2056565, 9528781, 53546286, 59741933, 995176543, 249611138, 9906660887, 7621795442

Basic calculations (n = 21081531)

Multiplication

n×y

n×2	42163062
n×3	63244593
n×4	84326124
n×5	105407655

Division

n÷y

n÷2	10540765.5
n÷3	7027177
n÷3	5270382.75
n÷5	4216306.2

Exponentiation

n^y

n²	444430949303961
n³	9.3692848351109E+21
n⁴	1.9751886869922E+29
n⁵	4.1640001535675E+36

Nth Root

^y√n

²√n	4591.4628387911
³√n	276.2490007676
⁴√n	67.760333815523
⁵√n	29.159523945782

Divisors of 21081531

1, 3, 1399, 4197, 5023, 15069, 7027177, 21081531

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	-21081530	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 21081531 can be divided by 8 positive divisors. The sum of these divisors (counting 21081531) is 1, the average is 0.125.

Base conversion 21081531

Base	System	Value
2	Binary	1010000011010110110111011
3	Ternary	1110200001102110
4	Quaternary	1100122312323
5	Quinary	20344102111
6	Senary	2031503403
8	Octal	120326673
10	Decimal	21081531
12	Duodecimal	7087b63
16	Hexadecimal	141adbb
20	Vigesimal	6bf3gb
36	Base36	cjum3

Cryptographic Hash Functions

md5	361cc7d4cec8fb3bb87819c6c2fcd96d
sha1	6cceecc5e2fa1c184fe99da4428b61d68e17cd99
sha256	56c85c6dde1426109a805224e076698544ad7b755ad8b26bd86994d85e0a3f93
sha512	8653c7def80f3a7fabebbec5cf76bd0cc18444694e65d41230db2511792284e6ad0c8c412fb0c329d420d20d3869602fb57071c3e3c008a1acc3976fcb1c6796
ripemd-160	0273c9f9671d47bb46f9cbf77e2feb163640fd85

21081531 as geometric shapes

Circle

Radius = n

Diameter	42163062
Circumference	132459165.83205
Area	1.3962210053613E+15

Sphere

Radius = n

Volume	3.9245968543166E+22
Surface area	5.584884021445E+15
Circumference	132459165.83205

Square

Length = n

Perimeter	84326124
Area	444430949303961
Diagonal	29813787.055789

Cube

Length = n

Surface area	2666585695823766
Volume	9.3692848351109E+21
Space diagonal	36514282.793338

Equilateral Triangle

Length = n

Perimeter	63244593
Area	1.9244424616263E+14
Altitude	18257141.396669

Triangular Pyramid

Length = n

Surface area	1.9244424616263E+14
Volume	1.1041808069625E+21
Height	9937929.0185963