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

21609981 (number)

21609981 is an odd 8-digits composite number following 21609980 and preceding 21609982. In scientific notation, it is written as 2.1609981 × 10^7. The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors. There are 14385096 positive integers (up to 21609981) that are relatively prime to 21609981.

Interesting facts

21609981 has 8 divisors, whose sum is 24047040
The reverse of 21609981 is 18990612
Previous prime number is 887

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 36
Digital Root 9

Name

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

Notation

Scientific notation	2.1609981 × 10^7
Engineering notation	2.1609981 × 10^6

Prime Factorization of 21609981

Prime Factorization 9 × 887 × 2707

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21609981	Product of the distinct prime numbers

The prime factorization of 21609981 is 9 × 887 × 2707. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 6, 79, 65, 208, 315, 7105, 1460, 38005, 91191, 83610, 999353, 1075342, 7060650, 25900359, 59802175, 212995669, 828887504, 1939665697, 5196691776

Basic calculations (n = 21609981)

Multiplication

n×y

n×2	43219962
n×3	64829943
n×4	86439924
n×5	108049905

Division

n÷y

n÷2	10804990.5
n÷3	7203327
n÷3	5402495.25
n÷5	4321996.2

Exponentiation

n^y

n²	466991278820361
n³	1.0091672662474E+22
n⁴	2.1808085449428E+29
n⁵	4.7127231220851E+36

Nth Root

^y√n

²√n	4648.6536760658
³√n	278.53821942809
⁴√n	68.181036044239
⁵√n	29.304267968005

Divisors of 21609981

1, 9, 887, 2707, 7983, 24363, 2401109, 21609981

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	-21609980	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 21609981 can be divided by 8 positive divisors. The sum of these divisors (counting 21609981) is 1, the average is 0.125.

Base conversion 21609981

Base	System	Value
2	Binary	1010010011011110111111101
3	Ternary	1111122220022200
4	Quaternary	1102123313331
5	Quinary	21013004411
6	Senary	2051102113
8	Octal	122336775
10	Decimal	21609981
12	Duodecimal	72a1939
16	Hexadecimal	149bdfd
20	Vigesimal	6f14j1
36	Base36	cv6d9

Cryptographic Hash Functions

md5	790329b99f3934cec6ebe424e895337f
sha1	6f6fd1cd36623fb859ac36804c112d45e9018d3b
sha256	5cc6645daced2430179aa8f4858198f360dd40e72c57cc86caa8fbb71a6970e7
sha512	7f13bc7e66fec67ff6eee6d7af3e3672e4db790d118e63b05690886441805d678df440c671f1cebc7322dd3d27c383de0264980af6c04ce3409709342ef7e802
ripemd-160	ca4cae57cf85f8c43e87e4f36aee27670d408e79

21609981 as geometric shapes

Circle

Radius = n

Diameter	43219962
Circumference	135779515.10763
Area	1.4670963708325E+15

Sphere

Radius = n

Volume	4.227189959848E+22
Surface area	5.8683854833302E+15
Circumference	135779515.10763

Square

Length = n

Perimeter	86439924
Area	466991278820361
Diagonal	30561128.212825

Cube

Length = n

Surface area	2801947672922166
Volume	1.0091672662474E+22
Space diagonal	37429585.042598

Equilateral Triangle

Length = n

Perimeter	64829943
Area	2.0221315540211E+14
Altitude	18714792.521299

Triangular Pyramid

Length = n

Surface area	2.0221315540211E+14
Volume	1.1893150288583E+21
Height	10187042.737608