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

21131281 (number)

21131281 is an odd 8-digits composite number following 21131280 and preceding 21131282. In scientific notation, it is written as 2.1131281 × 10^7. The sum of its digits is 19. It has a total of 2 prime factors and 4 positive divisors. There are 21118500 positive integers (up to 21131281) that are relatively prime to 21131281.

Interesting facts

21131281 has 4 divisors, whose sum is 21144064
The reverse of 21131281 is 18213112
Previous prime number is 1951

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 19
Digital Root 1

Name

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

Notation

Scientific notation	2.1131281 × 10^7
Engineering notation	2.1131281 × 10^6

Prime Factorization of 21131281

Prime Factorization 1951 × 10831

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21131281	Product of the distinct prime numbers

The prime factorization of 21131281 is 1951 × 10831. Since it has a total of 2 prime factors.

Most popular turbo-numbers

8, 5, 40, 92, 726, 899, 7617, 203, 63093, 94952, 330612, 279231, 2995621, 2578431, 91300891, 76050868, 188118790, 867643471, 5661255500, 8476747508

Basic calculations (n = 21131281)

Multiplication

n×y

n×2	42262562
n×3	63393843
n×4	84525124
n×5	105656405

Division

n÷y

n÷2	10565640.5
n÷3	7043760.3333333
n÷3	5282820.25
n÷5	4226256.2

Exponentiation

n^y

n²	446531036700961
n³	9.4357728117493E+21
n⁴	1.9938996673723E+29
n⁵	4.2133654157052E+36

Nth Root

^y√n

²√n	4596.8773096527
³√n	276.46613539283
⁴√n	67.800275144373
⁵√n	29.173273600592

Divisors of 21131281

1, 1951, 10831, 21131281

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	-21131280	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 21131281 can be divided by 4 positive divisors. The sum of these divisors (counting 21131281) is 1, the average is 0.25.

Base conversion 21131281

Base	System	Value
2	Binary	1010000100111000000010001
3	Ternary	1110202120200001
4	Quaternary	1100213000101
5	Quinary	20402200111
6	Senary	2032530001
8	Octal	120470021
10	Decimal	21131281
12	Duodecimal	70b0901
16	Hexadecimal	1427011
20	Vigesimal	6c1841
36	Base36	ckx01

Cryptographic Hash Functions

md5	a010074fc1dc0acbd1b3caf6b10ac899
sha1	fb9fb9cf2ad1b6bb3c0cfc495ff6c75eda04d516
sha256	fb7b6724e4c3c39142a5085f7f8149eb80e5a5325f916340b427a225f472f8fe
sha512	5841f34f14ebcd791a59bf0c3c0aac89785b3633fe464e52fda4028205b6df0d56d91009d3728d26887f28731e793d4eb6a3e367c1253c05493b0201c74ac31b
ripemd-160	5cacfa740dc83016f38cc1b3273b7e7703041497

21131281 as geometric shapes

Circle

Radius = n

Diameter	42262562
Circumference	132771754.30108
Area	1.4028186244996E+15

Sphere

Radius = n

Volume	3.9524472728445E+22
Surface area	5.6112744979983E+15
Circumference	132771754.30108

Square

Length = n

Perimeter	84525124
Area	446531036700961
Diagonal	29884144.180517

Cube

Length = n

Surface area	2679186220205766
Volume	9.4357728117493E+21
Space diagonal	36600452.321015

Equilateral Triangle

Length = n

Perimeter	63393843
Area	1.9335361068062E+14
Altitude	18300226.160507

Triangular Pyramid

Length = n

Surface area	1.9335361068062E+14
Volume	1.1120164901539E+21
Height	9961381.3935056