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

21909721 (number)

21909721 is an odd 8-digits composite number following 21909720 and preceding 21909722. In scientific notation, it is written as 2.1909721 × 10^7. The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors. There are 21855744 positive integers (up to 21909721) that are relatively prime to 21909721.

Interesting facts

21909721 has 4 divisors, whose sum is 21963700
The reverse of 21909721 is 12790912
Previous prime number is 409

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4

Name

Name	twenty-one million nine hundred nine thousand seven hundred twenty-one

Notation

Scientific notation	2.1909721 × 10^7
Engineering notation	2.1909721 × 10^6

Prime Factorization of 21909721

Prime Factorization 409 × 53569

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21909721	Product of the distinct prime numbers

The prime factorization of 21909721 is 409 × 53569. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 4, 28, 58, 36, 545, 8299, 3243, 26717, 90600, 20311, 92120, 5798355, 3173318, 91971025, 25772008, 283593387, 46881821, 5825378444, 3043434545

Basic calculations (n = 21909721)

Multiplication

n×y

n×2	43819442
n×3	65729163
n×4	87638884
n×5	109548605

Division

n÷y

n÷2	10954860.5
n÷3	7303240.3333333
n÷3	5477430.25
n÷5	4381944.2

Exponentiation

n^y

n²	480035874297841
n³	1.0517452075857E+22
n⁴	2.3043444061289E+29
n⁵	5.0487543026195E+36

Nth Root

^y√n

²√n	4680.7820927704
³√n	279.82012682039
⁴√n	68.416241439956
⁵√n	29.385113292652

Divisors of 21909721

1, 409, 53569, 21909721

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21909720	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	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	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21909721 can be divided by 4 positive divisors. The sum of these divisors (counting 21909721) is 1, the average is 0.25.

Base conversion 21909721

Base	System	Value
2	Binary	1010011100101000011011001
3	Ternary	1112020010111011
4	Quaternary	1103211003121
5	Quinary	21102102341
6	Senary	2101333521
8	Octal	123450331
10	Decimal	21909721
12	Duodecimal	74072a1
16	Hexadecimal	14e50d9
20	Vigesimal	6gie61
36	Base36	d1lnd

Cryptographic Hash Functions

md5	c6afc63cbdd3d18b29a6c6c928458004
sha1	7c37d08fa3f1f984f459c93e7bd011ff0a275a3b
sha256	03b0d3dce2d635bbd33677d656486863131bc9d3c985600b6d5326dc6e9e555e
sha512	82dc3ce0b73949e36a9209b073982eb1bf42d0aa00eb02e0bb9992632aaf419118f8d16b13f0fac60414a58e0441130315245d5fd27aa049ed883c4ec8fc9d46
ripemd-160	e8635f54f17bb5314300ab3a3f798b52f7cb6036

21909721 as geometric shapes

Circle

Radius = n

Diameter	43819442
Circumference	137662837.0716
Area	1.5080771761537E+15

Sphere

Radius = n

Volume	4.4055400234659E+22
Surface area	6.0323087046146E+15
Circumference	137662837.0716

Square

Length = n

Perimeter	87638884
Area	480035874297841
Diagonal	30985024.586011

Cube

Length = n

Surface area	2880215245787046
Volume	1.0517452075857E+22
Space diagonal	37948749.951659

Equilateral Triangle

Length = n

Perimeter	65729163
Area	2.078616309349E+14
Altitude	18974374.975829

Triangular Pyramid

Length = n

Surface area	2.078616309349E+14
Volume	1.2394936139405E+21
Height	10328341.52867