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

21000921 (number)

21000921 is an odd 8-digits composite number following 21000920 and preceding 21000922. In scientific notation, it is written as 2.1000921 × 10^7. The sum of its digits is 15. It has a total of 3 prime factors and 8 positive divisors. There are 13871952 positive integers (up to 21000921) that are relatively prime to 21000921.

Interesting facts

21000921 has 8 divisors, whose sum is 28258560
The reverse of 21000921 is 12900012
Previous prime number is 109

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 15
Digital Root 6

Name

Name	twenty-one million nine hundred twenty-one

Notation

Scientific notation	2.1000921 × 10^7
Engineering notation	2.1000921 × 10^6

Prime Factorization of 21000921

Prime Factorization 3 × 109 × 64223

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21000921	Product of the distinct prime numbers

The prime factorization of 21000921 is 3 × 109 × 64223. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 8, 9, 33, 350, 527, 3737, 1262, 89998, 4507, 458976, 198608, 6478004, 5832532, 21188868, 647052, 629958717, 636227800, 3755151374, 370476011

Basic calculations (n = 21000921)

Multiplication

n×y

n×2	42001842
n×3	63002763
n×4	84003684
n×5	105004605

Division

n÷y

n÷2	10500460.5
n÷3	7000307
n÷3	5250230.25
n÷5	4200184.2

Exponentiation

n^y

n²	441038682848241
n³	9.26221853644E+21
n⁴	1.9451511976851E+29
n⁵	4.084996663564E+36

Nth Root

^y√n

²√n	4582.6761831925
³√n	275.89645086354
⁴√n	67.695466489216
⁵√n	29.137190153819

Divisors of 21000921

1, 3, 109, 327, 64223, 192669, 7000307, 21000921

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	-21000920	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 21000921 can be divided by 8 positive divisors. The sum of these divisors (counting 21000921) is 1, the average is 0.125.

Base conversion 21000921

Base	System	Value
2	Binary	1010000000111001011011001
3	Ternary	1110111221211220
4	Quaternary	1100013023121
5	Quinary	20334012141
6	Senary	2030042253
8	Octal	120071331
10	Decimal	21000921
12	Duodecimal	7049389
16	Hexadecimal	14072d9
20	Vigesimal	6b5261
36	Base36	ci4ex

Cryptographic Hash Functions

md5	f11355c6a9a2f43bb9d39f33f9048cdb
sha1	697a43741e8166625c39c1ee9f19f7b67dd712b6
sha256	7ace6a092c0b36adce4aa239efe615e58bdbc16464078a042af94fc2ccfd6bda
sha512	143eb58c24f2c64fbd5fc990e93e40197e2f046263cdac5c207e55175e91b166362cab0a1de9129f8f6fd7b96cefe1460f0b0fddabd2f820b1058e418a1b9997
ripemd-160	a913bffb575751ed3909c1602abd2dba834dc30e

21000921 as geometric shapes

Circle

Radius = n

Diameter	42001842
Circumference	131952678.26444
Area	1.385563885985E+15

Sphere

Radius = n

Volume	3.8797490280031E+22
Surface area	5.5422555439398E+15
Circumference	131952678.26444

Square

Length = n

Perimeter	84003684
Area	441038682848241
Diagonal	29699787.300526

Cube

Length = n

Surface area	2646232097089446
Volume	9.26221853644E+21
Space diagonal	36374662.17774

Equilateral Triangle

Length = n

Perimeter	63002763
Area	1.909753516991E+14
Altitude	18187331.08887

Triangular Pyramid

Length = n

Surface area	1.909753516991E+14
Volume	1.0915629226581E+21
Height	9899929.1001753