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

21081381 (number)

21081381 is an odd 8-digits composite number following 21081380 and preceding 21081382. In scientific notation, it is written as 2.1081381 × 10^7. The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors. There are 14037840 positive integers (up to 21081381) that are relatively prime to 21081381.

Interesting facts

21081381 has 8 divisors, whose sum is 28141344
The reverse of 21081381 is 18318012
Previous prime number is 971

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6

Name

Name	twenty-one million eighty-one thousand three hundred eighty-one

Notation

Scientific notation	2.1081381 × 10^7
Engineering notation	2.1081381 × 10^6

Prime Factorization of 21081381

Prime Factorization 3 × 971 × 7237

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21081381	Product of the distinct prime numbers

The prime factorization of 21081381 is 3 × 971 × 7237. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 3, 98, 65, 925, 44, 9239, 1417, 48432, 55242, 179157, 604008, 9287952, 8442173, 20853961, 16577409, 952530685, 825159936, 2337754228, 1292531032

Basic calculations (n = 21081381)

Multiplication

n×y

n×2	42162762
n×3	63244143
n×4	84325524
n×5	105406905

Division

n÷y

n÷2	10540690.5
n÷3	7027127
n÷3	5270345.25
n÷5	4216276.2

Exponentiation

n^y

n²	444424624867161
n³	9.3690848426067E+21
n⁴	1.9751324718832E+29
n⁵	4.1638520165241E+36

Nth Root

^y√n

²√n	4591.4465040987
³√n	276.24834557406
⁴√n	67.760213282565
⁵√n	29.159482450304

Divisors of 21081381

1, 3, 971, 2913, 7237, 21711, 7027127, 21081381

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	-21081380	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 21081381 can be divided by 8 positive divisors. The sum of these divisors (counting 21081381) is 1, the average is 0.125.

Base conversion 21081381

Base	System	Value
2	Binary	1010000011010110100100101
3	Ternary	1110200001012220
4	Quaternary	1100122310211
5	Quinary	20344101011
6	Senary	2031502553
8	Octal	120326445
10	Decimal	21081381
12	Duodecimal	7087a59
16	Hexadecimal	141ad25
20	Vigesimal	6bf391
36	Base36	cjuhx

Cryptographic Hash Functions

md5	f705333fd5faaf7ab24c57f31e8c480f
sha1	669ccf70ab56e59540983005340d7f28cb5c38e5
sha256	967a47d618b4703811bf05732ef71187785567fbb7e8d36ad8f17230e6ade6e7
sha512	3d1635e416a2adfffcec884dfa7712f388f36a59d087636d9e8c2881a3819267bb217f652ded0173f211c29434ec3c5463da9cdd04fcbaa98fd48860a9b532ee
ripemd-160	385366963e2a653996be56ce8119bdb31d4561ac

21081381 as geometric shapes

Circle

Radius = n

Diameter	42162762
Circumference	132458223.35425
Area	1.3962011365571E+15

Sphere

Radius = n

Volume	3.9245130816524E+22
Surface area	5.5848045462283E+15
Circumference	132458223.35425

Square

Length = n

Perimeter	84325524
Area	444424624867161
Diagonal	29813574.923754

Cube

Length = n

Surface area	2666547749202966
Volume	9.3690848426067E+21
Space diagonal	36514022.985717

Equilateral Triangle

Length = n

Perimeter	63244143
Area	1.9244150760117E+14
Altitude	18257011.492859

Triangular Pyramid

Length = n

Surface area	1.9244150760117E+14
Volume	1.1041572376199E+21
Height	9937858.3079182