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

21031887 (number)

21031887 is an odd 8-digits composite number following 21031886 and preceding 21031888. In scientific notation, it is written as 2.1031887 × 10^7. The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors. There are 13998168 positive integers (up to 21031887) that are relatively prime to 21031887.

Interesting facts

21031887 has 8 divisors, whose sum is 28088704
The reverse of 21031887 is 78813012
Previous prime number is 643

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3

Name

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

Notation

Scientific notation	2.1031887 × 10^7
Engineering notation	2.1031887 × 10^6

Prime Factorization of 21031887

Prime Factorization 3 × 643 × 10903

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21031887	Product of the distinct prime numbers

The prime factorization of 21031887 is 3 × 643 × 10903. Since it has a total of 3 prime factors.

Most popular turbo-numbers

7, 3, 32, 45, 576, 778, 5573, 9921, 96662, 63619, 159649, 115537, 6138268, 6223206, 33174210, 96143585, 940553615, 543145790, 416585559, 5883807215

Basic calculations (n = 21031887)

Multiplication

n×y

n×2	42063774
n×3	63095661
n×4	84127548
n×5	105159435

Division

n÷y

n÷2	10515943.5
n÷3	7010629
n÷3	5257971.75
n÷5	4206377.4

Exponentiation

n^y

n²	442340270780769
n³	9.3032505906105E+21
n⁴	1.956649151544E+29
n⁵	4.115202385392E+36

Nth Root

^y√n

²√n	4586.0535321777
³√n	276.03198799592
⁴√n	67.720407058565
⁵√n	29.145777687136

Divisors of 21031887

1, 3, 643, 1929, 10903, 32709, 7010629, 21031887

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	-21031886	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 21031887 can be divided by 8 positive divisors. The sum of these divisors (counting 21031887) is 1, the average is 0.125.

Base conversion 21031887

Base	System	Value
2	Binary	1010000001110101111001111
3	Ternary	1110120112022210
4	Quaternary	1100032233033
5	Quinary	20341010022
6	Senary	2030441503
8	Octal	120165717
10	Decimal	21031887
12	Duodecimal	7063293
16	Hexadecimal	140ebcf
20	Vigesimal	6b8je7
36	Base36	cisb3

Cryptographic Hash Functions

md5	47bd135fcb3282c4125ff813a6263f3c
sha1	a6ad7e9c40ef5b0f0c89ede8e3941d921bfcfab1
sha256	e815a57ee2845de60aedbfef584057eb1c607378c1eb34983ed6fa79f8c0d352
sha512	128a3486865097cb89dd3bd556461e48d7769b31c1deab08a5ea7c50fb12ca575b575e18d1255e9155747c4bc32551682a394fcf12c8e7b9ad409129986dd850
ripemd-160	3cd4818a292c1c512b6bfc0754bbe2d3840c32c6

21031887 as geometric shapes

Circle

Radius = n

Diameter	42063774
Circumference	132147243.38066
Area	1.3896529450718E+15

Sphere

Radius = n

Volume	3.8969364946623E+22
Surface area	5.5586117802871E+15
Circumference	132147243.38066

Square

Length = n

Perimeter	84127548
Area	442340270780769
Diagonal	29743579.837698

Cube

Length = n

Surface area	2654041624684614
Volume	9.3032505906105E+21
Space diagonal	36428296.863047

Equilateral Triangle

Length = n

Perimeter	63095661
Area	1.9153895580652E+14
Altitude	18214148.431524

Triangular Pyramid

Length = n

Surface area	1.9153895580652E+14
Volume	1.0963985966164E+21
Height	9914526.6125661