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

21813921 (number)

21813921 is an odd 8-digits composite number following 21813920 and preceding 21813922. In scientific notation, it is written as 2.1813921 × 10^7. The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors. There are 14542596 positive integers (up to 21813921) that are relatively prime to 21813921.

Interesting facts

21813921 has 8 divisors, whose sum is 32316960
The reverse of 21813921 is 12931812
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9

Name

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

Notation

Scientific notation	2.1813921 × 10^7
Engineering notation	2.1813921 × 10^6

Prime Factorization of 21813921

Prime Factorization 9 × 3 × 807923

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21813921	Product of the distinct prime numbers

The prime factorization of 21813921 is 9 × 3 × 807923. Since it has a total of 3 prime factors.

Most popular turbo-numbers

8, 8, 73, 62, 856, 84, 9810, 7145, 8243, 43486, 580910, 733244, 224138, 6809717, 35228606, 58296185, 858033424, 78415050, 2644185368, 7101169030

Basic calculations (n = 21813921)

Multiplication

n×y

n×2	43627842
n×3	65441763
n×4	87255684
n×5	109069605

Division

n÷y

n÷2	10906960.5
n÷3	7271307
n÷3	5453480.25
n÷5	4362784.2

Exponentiation

n^y

n²	475847149394241
n³	1.0380092124961E+22
n⁴	2.2643050958663E+29
n⁵	4.9393372481124E+36

Nth Root

^y√n

²√n	4670.537549362
³√n	279.4116942028
⁴√n	68.341331193956
⁵√n	29.359371016919

Divisors of 21813921

1, 3, 9, 27, 807923, 2423769, 7271307, 21813921

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	-21813920	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 21813921 can be divided by 8 positive divisors. The sum of these divisors (counting 21813921) is 1, the average is 0.125.

Base conversion 21813921

Base	System	Value
2	Binary	1010011001101101010100001
3	Ternary	1112001021002000
4	Quaternary	1103031222201
5	Quinary	21041021141
6	Senary	2055314213
8	Octal	123155241
10	Decimal	21813921
12	Duodecimal	737b969
16	Hexadecimal	14cdaa1
20	Vigesimal	6g6eg1
36	Base36	czjq9

Cryptographic Hash Functions

md5	4e7430b72d608db17902cf9e47235ec9
sha1	4d0ce6db53c3a79837431021ef09a23f2f3afdfd
sha256	2cda14324decd3c5c3076134e51fae40bff1d135cb84456da63ab0811c6fd7ac
sha512	6484ab24a72482f0c0153e813cf4d823be39b3494dae6158466256341335f5e85976bcc88ddc7d12eee08b8272454bc05a7311da810be460b5dd24ac202c45d6
ripemd-160	2ea89bc676896284d2127e03140a9f1c4575ce29

21813921 as geometric shapes

Circle

Radius = n

Diameter	43627842
Circumference	137060907.91918
Area	1.4949179087686E+15

Sphere

Radius = n

Volume	4.3480028217818E+22
Surface area	5.9796716350744E+15
Circumference	137060907.91918

Square

Length = n

Perimeter	87255684
Area	475847149394241
Diagonal	30849542.926735

Cube

Length = n

Surface area	2855082896365446
Volume	1.0380092124961E+22
Space diagonal	37782819.484294

Equilateral Triangle

Length = n

Perimeter	65441763
Area	2.0604785984691E+14
Altitude	18891409.742147

Triangular Pyramid

Length = n

Surface area	2.0604785984691E+14
Volume	1.2233055884835E+21
Height	10283180.975578