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

20921681 (number)

20921681 is an odd 8-digits composite number following 20921680 and preceding 20921682. In scientific notation, it is written as 2.0921681 × 10^7. The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors. There are 18879520 positive integers (up to 20921681) that are relatively prime to 20921681.

Interesting facts

20921681 has 8 divisors, whose sum is 22991904
The reverse of 20921681 is 18612902
Previous prime number is 137

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2

Name

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

Notation

Scientific notation	2.0921681 × 10^7
Engineering notation	2.0921681 × 10^6

Prime Factorization of 20921681

Prime Factorization 11 × 137 × 13883

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	20921681	Product of the distinct prime numbers

The prime factorization of 20921681 is 11 × 137 × 13883. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 9, 31, 21, 228, 913, 1112, 3038, 11736, 9427, 303698, 865647, 4894946, 1317334, 31198394, 42104399, 95653784, 39581273, 5715767960, 8545941505

Basic calculations (n = 20921681)

Multiplication

n×y

n×2	41843362
n×3	62765043
n×4	83686724
n×5	104608405

Division

n÷y

n÷2	10460840.5
n÷3	6973893.6666667
n÷3	5230420.25
n÷5	4184336.2

Exponentiation

n^y

n²	437716735865761
n³	9.1577699161447E+21
n⁴	1.9159594085698E+29
n⁵	4.0085091555045E+36

Nth Root

^y√n

²√n	4574.0224092149
³√n	275.54901230874
⁴√n	67.631519347231
⁵√n	29.115168991031

Divisors of 20921681

1, 11, 137, 1507, 13883, 152713, 1901971, 20921681

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	-20921680	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 20921681 can be divided by 8 positive divisors. The sum of these divisors (counting 20921681) is 1, the average is 0.125.

Base conversion 20921681

Base	System	Value
2	Binary	1001111110011110101010001
3	Ternary	1110100221011002
4	Quaternary	1033303311101
5	Quinary	20323443211
6	Senary	2024231345
8	Octal	117636521
10	Decimal	20921681
12	Duodecimal	700b555
16	Hexadecimal	13f3d51
20	Vigesimal	6af441
36	Base36	cgf9t

Cryptographic Hash Functions

md5	fbabee9dd4a1a7fa648d06294873bd47
sha1	e7f6d3d8b345e9094d728bd12714b5f5c5489d02
sha256	d366e603e775e15cf628632bf2944088bcefeb764f5cb889eae75caaf93e9de2
sha512	50191bcf0bf80c54d346a0db4a4536868428a1586a25ff651a2413a03090b955763769a0717520ec18b74cfbe5cc58d71cc1befab103ededf90db764e14642da
ripemd-160	927230b4e57a314d3cfe4ca55b8e2cbd488570bd

20921681 as geometric shapes

Circle

Radius = n

Diameter	41843362
Circumference	131454798.6607
Area	1.3751276817492E+15

Sphere

Radius = n

Volume	3.8359976922434E+22
Surface area	5.5005107269967E+15
Circumference	131454798.6607

Square

Length = n

Perimeter	83686724
Area	437716735865761
Diagonal	29587725.017843

Cube

Length = n

Surface area	2626300415194566
Volume	9.1577699161447E+21
Space diagonal	36237414.471748

Equilateral Triangle

Length = n

Perimeter	62765043
Area	1.8953690646068E+14
Altitude	18118707.235874

Triangular Pyramid

Length = n

Surface area	1.8953690646068E+14
Volume	1.0792535347087E+21
Height	9862575.0059478