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

21031918 (number)

21031918 is an even 8-digits composite number following 21031917 and preceding 21031919. In scientific notation, it is written as 2.1031918 × 10^7. The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors. There are 10515958 positive integers (up to 21031918) that are relatively prime to 21031918.

Interesting facts

21031918 has 4 divisors, whose sum is 31547880
The reverse of 21031918 is 81913012
Previous prime number is 2

Basic properties

Is Prime? no
Number parity even
Number length 8
Sum of Digits 25
Digital Root 7

Name

Name	twenty-one million thirty-one thousand nine hundred eighteen

Notation

Scientific notation	2.1031918 × 10^7
Engineering notation	2.1031918 × 10^6

Prime Factorization of 21031918

Prime Factorization 2 × 10515959

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21031918	Product of the distinct prime numbers

The prime factorization of 21031918 is 2 × 10515959. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 9, 56, 22, 501, 266, 6910, 1157, 10658, 64612, 948278, 695851, 3809906, 4621907, 83855599, 81932027, 371880635, 884196198, 6406864384, 1878763201

Basic calculations (n = 21031918)

Multiplication

n×y

n×2	42063836
n×3	63095754
n×4	84127672
n×5	105159590

Division

n÷y

n÷2	10515959
n÷3	7010639.3333333
n÷3	5257979.5
n÷5	4206383.6

Exponentiation

n^y

n²	442341574758724
n³	9.3032917283164E+21
n⁴	1.9566606876003E+29
n⁵	4.1152327135433E+36

Nth Root

^y√n

²√n	4586.0569119888
³√n	276.03212361519
⁴√n	67.720432012715
⁵√n	29.145786279029

Divisors of 21031918

1, 2, 10515959, 21031918

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	-21031917	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 21031918 can be divided by 4 positive divisors. The sum of these divisors (counting 21031918) is 1, the average is 0.25.

Base conversion 21031918

Base	System	Value
2	Binary	1010000001110101111101110
3	Ternary	1110120112100221
4	Quaternary	1100032233232
5	Quinary	20341010133
6	Senary	2030441554
8	Octal	120165756
10	Decimal	21031918
12	Duodecimal	70632ba
16	Hexadecimal	140ebee
20	Vigesimal	6b8jfi
36	Base36	cisby

Cryptographic Hash Functions

md5	fa3585f92201e956a69d7e547f436a59
sha1	36895bbb67b840b3939810580f79954a2814259b
sha256	5ed326022552a540355e75ca3052cd258febcca512142d5a50e1d20348ad7fb6
sha512	c0b70446d8871de51e7b0ee64363046688030f093d400a6a0b41c19b7754a99f79eaeac77644e44fb4af085e530f5e41f45b87dd98a5d7d9d3454f19b77f3d43
ripemd-160	948b069ae3b3b5ad33dc8b2040044d411efd4199

21031918 as geometric shapes

Circle

Radius = n

Diameter	42063836
Circumference	132147438.15941
Area	1.3896570416393E+15

Sphere

Radius = n

Volume	3.8969537263842E+22
Surface area	5.5586281665574E+15
Circumference	132147438.15941

Square

Length = n

Perimeter	84127672
Area	442341574758724
Diagonal	29743623.678319

Cube

Length = n

Surface area	2654049448552344
Volume	9.3032917283164E+21
Space diagonal	36428350.556622

Equilateral Triangle

Length = n

Perimeter	63095754
Area	1.9153952044553E+14
Altitude	18214175.278311

Triangular Pyramid

Length = n

Surface area	1.9153952044553E+14
Volume	1.0964034447415E+21
Height	9914541.2261063