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

21085921 (number)

21085921 is an odd 8-digits composite number following 21085920 and preceding 21085922. In scientific notation, it is written as 2.1085921 × 10^7. The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors. There are 20278560 positive integers (up to 21085921) that are relatively prime to 21085921.

Interesting facts

21085921 has 8 divisors, whose sum is 21901824
The reverse of 21085921 is 12958012
Previous prime number is 167

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

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

Notation

Scientific notation	2.1085921 × 10^7
Engineering notation	2.1085921 × 10^6

Prime Factorization of 21085921

Prime Factorization 31 × 167 × 4073

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21085921	Product of the distinct prime numbers

The prime factorization of 21085921 is 31 × 167 × 4073. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 1, 15, 83, 395, 394, 5005, 3957, 94545, 20732, 759081, 437507, 5026299, 2568309, 23139575, 80099123, 114830290, 355228237, 4162085525, 7547450624

Basic calculations (n = 21085921)

Multiplication

n×y

n×2	42171842
n×3	63257763
n×4	84343684
n×5	105429605

Division

n÷y

n÷2	10542960.5
n÷3	7028640.3333333
n÷3	5271480.25
n÷5	4217184.2

Exponentiation

n^y

n²	444616064418241
n³	9.3751392096539E+21
n⁴	1.9768344473877E+29
n⁵	4.1683374987695E+36

Nth Root

^y√n

²√n	4591.9408750549
³√n	276.26817472202
⁴√n	67.763861128591
⁵√n	29.160738275507

Divisors of 21085921

1, 31, 167, 4073, 5177, 126263, 680191, 21085921

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	-21085920	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 21085921 can be divided by 8 positive divisors. The sum of these divisors (counting 21085921) is 1, the average is 0.125.

Base conversion 21085921

Base	System	Value
2	Binary	1010000011011111011100001
3	Ternary	1110200021110001
4	Quaternary	1100123323201
5	Quinary	20344222141
6	Senary	2031540001
8	Octal	120337341
10	Decimal	21085921
12	Duodecimal	708a601
16	Hexadecimal	141bee1
20	Vigesimal	6bfeg1
36	Base36	cjy01

Cryptographic Hash Functions

md5	eb312535bdffc8cf761b35756320f967
sha1	fc999f74007ebd50e347698c933d439607071a38
sha256	6848d4a90bf82c48b1e5705ff1d9487a2b38eee8c0fad2c35d7752c24895f683
sha512	89a8ab30ef96bab93924c6dad341e28ea8f389082b852253918b76c3c8218bfea60b95ba1fe9d96673d99381fccf1fb6969ca2fdce1297504c6dee8d07c7b9b7
ripemd-160	02edb6d68316a4c2c26ebfdc0ddcc0193f68e829

21085921 as geometric shapes

Circle

Radius = n

Diameter	42171842
Circumference	132486749.01555
Area	1.3968025616444E+15

Sphere

Radius = n

Volume	3.9270491289907E+22
Surface area	5.5872102465774E+15
Circumference	132486749.01555

Square

Length = n

Perimeter	84343684
Area	444616064418241
Diagonal	29819995.453328

Cube

Length = n

Surface area	2667696386509446
Volume	9.3751392096539E+21
Space diagonal	36521886.496384

Equilateral Triangle

Length = n

Perimeter	63257763
Area	1.9252440335843E+14
Altitude	18260943.248192

Triangular Pyramid

Length = n

Surface area	1.9252440335843E+14
Volume	1.104870751619E+21
Height	9939998.4844426