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

21031881 (number)

21031881 is an odd 8-digits composite number following 21031880 and preceding 21031882. In scientific notation, it is written as 2.1031881 × 10^7. The sum of its digits is 24. It has a total of 5 prime factors and 16 positive divisors. There are 12938640 positive integers (up to 21031881) that are relatively prime to 21031881.

Interesting facts

21031881 has 16 divisors, whose sum is 30387840
The reverse of 21031881 is 18813012
Previous prime number is 13

Basic properties

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

Name

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

Notation

Scientific notation	2.1031881 × 10^7
Engineering notation	2.1031881 × 10^6

Prime Factorization of 21031881

Prime Factorization 3 × 13 × 13 × 13 × 3191

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	5	Total number of prime factors
rad	Radical	124449	Product of the distinct prime numbers

The prime factorization of 21031881 is 3 × 13 × 13 × 13 × 3191. Since it has a total of 5 prime factors.

Most popular turbo-numbers

7, 9, 5, 20, 455, 428, 4087, 2439, 15464, 89728, 829716, 106845, 2432454, 5734530, 55682241, 14226549, 96122467, 385869766, 3723297030, 4851188715

Basic calculations (n = 21031881)

Multiplication

n×y

n×2	42063762
n×3	63095643
n×4	84127524
n×5	105159405

Division

n÷y

n÷2	10515940.5
n÷3	7010627
n÷3	5257970.25
n÷5	4206376.2

Exponentiation

n^y

n²	442340018398161
n³	9.3032426284879E+21
n⁴	1.9566469187649E+29
n⁵	4.1151965154479E+36

Nth Root

^y√n

²√n	4586.0528780205
³√n	276.03196174701
⁴√n	67.720402228726
⁵√n	29.145776024188

Divisors of 21031881

1, 3, 13, 39, 169, 507, 2197, 3191, 6591, 9573, 41483, 124449, 539279, 1617837, 7010627, 21031881

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21031880	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	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	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21031881 can be divided by 16 positive divisors. The sum of these divisors (counting 21031881) is 1, the average is 0.0625.

Base conversion 21031881

Base	System	Value
2	Binary	1010000001110101111001001
3	Ternary	1110120112022120
4	Quaternary	1100032233021
5	Quinary	20341010011
6	Senary	2030441453
8	Octal	120165711
10	Decimal	21031881
12	Duodecimal	7063289
16	Hexadecimal	140ebc9
20	Vigesimal	6b8je1
36	Base36	cisax

Cryptographic Hash Functions

md5	9007d2fdf8b88519d6be9a7d0ae46110
sha1	b5a165bd4a1eee96241a924aad0d9693b5eebd20
sha256	9e215f98488212d5a2c7b30f16b26662ed31558b1b2c8ea032ed52f34544d1f1
sha512	2f15c4c7184bca2d18a6a78d7d37a96805939933afc4c66b392ef14fd34d6c0a3e6df9ce7611d7496701855d55eb95478075cdcd26a633db5c8bf353d518c9a3
ripemd-160	d3b09e787c5e2b6ce9ecf56fe12381f328d60416

21031881 as geometric shapes

Circle

Radius = n

Diameter	42063762
Circumference	132147205.68155
Area	1.3896521521884E+15

Sphere

Radius = n

Volume	3.8969331594961E+22
Surface area	5.5586086087537E+15
Circumference	132147205.68155

Square

Length = n

Perimeter	84127524
Area	442340018398161
Diagonal	29743571.352417

Cube

Length = n

Surface area	2654040110388966
Volume	9.3032426284879E+21
Space diagonal	36428286.470743

Equilateral Triangle

Length = n

Perimeter	63095643
Area	1.9153884652164E+14
Altitude	18214143.235371

Triangular Pyramid

Length = n

Surface area	1.9153884652164E+14
Volume	1.0963976582713E+21
Height	9914523.784139