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

21081908 (number)

21081908 is an even 8-digits composite number following 21081907 and preceding 21081909. In scientific notation, it is written as 2.1081908 × 10^7. The sum of its digits is 29. It has a total of 4 prime factors and 12 positive divisors. There are 10444032 positive integers (up to 21081908) that are relatively prime to 21081908.

Interesting facts

21081908 has 12 divisors, whose sum is 37232580
The reverse of 21081908 is 80918012
Previous prime number is 109

Basic properties

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

Name

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

Notation

Scientific notation	2.1081908 × 10^7
Engineering notation	2.1081908 × 10^6

Prime Factorization of 21081908

Prime Factorization 2 × 2 × 109 × 48353

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	10540954	Product of the distinct prime numbers

The prime factorization of 21081908 is 2 × 2 × 109 × 48353. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 5, 65, 84, 203, 412, 6624, 1271, 7128, 87824, 268520, 973631, 2224389, 2101375, 18068287, 52271182, 315440605, 49263568, 1274697550, 7189212192

Basic calculations (n = 21081908)

Multiplication

n×y

n×2	42163816
n×3	63245724
n×4	84327632
n×5	105409540

Division

n÷y

n÷2	10540954
n÷3	7027302.6666667
n÷3	5270477
n÷5	4216381.6

Exponentiation

n^y

n²	444446844920464
n³	9.3697874955035E+21
n⁴	1.9753299795975E+29
n⁵	4.1643724899517E+36

Nth Root

^y√n

²√n	4591.5038930616
³√n	276.25064747362
⁴√n	67.760636752185
⁵√n	29.159628236707

Divisors of 21081908

1, 2, 4, 109, 218, 436, 48353, 96706, 193412, 5270477, 10540954, 21081908

12 divisors

τ	Total Divisors	12	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21081907	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.083333333333333	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	12	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21081908 can be divided by 12 positive divisors. The sum of these divisors (counting 21081908) is 1, the average is 0.083333333333333.

Base conversion 21081908

Base	System	Value
2	Binary	1010000011010111100110100
3	Ternary	1110200001221102
4	Quaternary	1100122330310
5	Quinary	20344110113
6	Senary	2031505232
8	Octal	120327464
10	Decimal	21081908
12	Duodecimal	7088218
16	Hexadecimal	141af34
20	Vigesimal	6bf4f8
36	Base36	cjuwk

Cryptographic Hash Functions

md5	b3073dc44df1b377a4787fe8158933a3
sha1	7fdb6883f8cf45c09ba4f1956600a6cb54d22031
sha256	f90e684397ed184d52560329a5ad5a5be02fbfdabe2624dbd85df0659d796834
sha512	c840dd4270488d5dc78e4afea23887f8cfa1e38bfd571925c2925e083fe2b69cee6afaae68340978914e3db8afdb0470947150365c1512a5025a346af50707ec
ripemd-160	d8c8ac5f1559da6316bde342cb0d92e73e078074

21081908 as geometric shapes

Circle

Radius = n

Diameter	42163816
Circumference	132461534.59291
Area	1.3962709429133E+15

Sphere

Radius = n

Volume	3.9248074082095E+22
Surface area	5.5850837716532E+15
Circumference	132461534.59291

Square

Length = n

Perimeter	84327632
Area	444446844920464
Diagonal	29814320.214302

Cube

Length = n

Surface area	2666681069522784
Volume	9.3697874955035E+21
Space diagonal	36514935.776493

Equilateral Triangle

Length = n

Perimeter	63245724
Area	1.9245112916648E+14
Altitude	18257467.888246

Triangular Pyramid

Length = n

Surface area	1.9245112916648E+14
Volume	1.1042400460579E+21
Height	9938106.7381006