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

21131887 (number)

21131887 is an odd 8-digits composite number following 21131886 and preceding 21131888. In scientific notation, it is written as 2.1131887 × 10^7. The sum of its digits is 31. It has a total of 3 prime factors and 8 positive divisors. There are 18112752 positive integers (up to 21131887) that are relatively prime to 21131887.

Interesting facts

21131887 has 8 divisors, whose sum is 24644000
The reverse of 21131887 is 78813112
Previous prime number is 49

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4

Name

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

Notation

Scientific notation	2.1131887 × 10^7
Engineering notation	2.1131887 × 10^6

Prime Factorization of 21131887

Prime Factorization 7 × 49 × 61609

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21131887	Product of the distinct prime numbers

The prime factorization of 21131887 is 7 × 49 × 61609. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 4, 76, 97, 330, 108, 8271, 4776, 15053, 37940, 524875, 443737, 4371684, 3242775, 83627724, 48248833, 711248066, 222443616, 3413870944, 8757678023

Basic calculations (n = 21131887)

Multiplication

n×y

n×2	42263774
n×3	63395661
n×4	84527548
n×5	105659435

Division

n÷y

n÷2	10565943.5
n÷3	7043962.3333333
n÷3	5282971.75
n÷5	4226377.4

Exponentiation

n^y

n²	446556648180769
n³	9.4365846284548E+21
n⁴	1.9941284003444E+29
n⁵	4.2139696019569E+36

Nth Root

^y√n

²√n	4596.943223491
³√n	276.46877818696
⁴√n	67.800761230911
⁵√n	29.173440924107

Divisors of 21131887

1, 7, 49, 343, 61609, 431263, 3018841, 21131887

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	-21131886	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 21131887 can be divided by 8 positive divisors. The sum of these divisors (counting 21131887) is 1, the average is 0.125.

Base conversion 21131887

Base	System	Value
2	Binary	1010000100111001001101111
3	Ternary	1110202121111111
4	Quaternary	1100213021233
5	Quinary	20402210022
6	Senary	2032532451
8	Octal	120471157
10	Decimal	21131887
12	Duodecimal	70b1127
16	Hexadecimal	142726f
20	Vigesimal	6c19e7
36	Base36	ckxgv

Cryptographic Hash Functions

md5	441b5d96ef3ed54fcbf6d96fb908dfee
sha1	d22cac59e7a6b53290f230a37ade2d015d5ab28f
sha256	fb4c9b22cf75fb17696eeeaf1e2f2734a7bcfa09addce6a9c67da3fafd31a41c
sha512	9c80a0b67a69414a067074e5464a84035d56208482a30b8105e4cb79aafbd241213d1e065c22d9405d1a88166a1d20f14505cfea748527044a3c1a89a8c30c2c
ripemd-160	a351b6f301972cdb065b385ac36d4d399c875273

21131887 as geometric shapes

Circle

Radius = n

Diameter	42263774
Circumference	132775561.91138
Area	1.4028990853364E+15

Sphere

Radius = n

Volume	3.9527873258309E+22
Surface area	5.6115963413455E+15
Circumference	132775561.91138

Square

Length = n

Perimeter	84527548
Area	446556648180769
Diagonal	29885001.193936

Cube

Length = n

Surface area	2679339889084614
Volume	9.4365846284548E+21
Space diagonal	36601501.943804

Equilateral Triangle

Length = n

Perimeter	63395661
Area	1.9336470077669E+14
Altitude	18300750.971902

Triangular Pyramid

Length = n

Surface area	1.9336470077669E+14
Volume	1.1121121636702E+21
Height	9961667.0646452