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

21131891 (number)

21131891 is an odd 8-digits composite number following 21131890 and preceding 21131892. In scientific notation, it is written as 2.1131891 × 10^7. The sum of its digits is 26. It has a total of 3 prime factors and 8 positive divisors. There are 19124640 positive integers (up to 21131891) that are relatively prime to 21131891.

Interesting facts

21131891 has 8 divisors, whose sum is 23156400
The reverse of 21131891 is 19813112
Previous prime number is 229

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 26
Digital Root 8

Name

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

Notation

Scientific notation	2.1131891 × 10^7
Engineering notation	2.1131891 × 10^6

Prime Factorization of 21131891

Prime Factorization 11 × 229 × 8389

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21131891	Product of the distinct prime numbers

The prime factorization of 21131891 is 11 × 229 × 8389. Since it has a total of 3 prime factors.

Most popular turbo-numbers

1, 10, 99, 26, 218, 886, 2072, 1429, 30806, 92458, 911437, 395687, 517218, 3130650, 11478936, 24824562, 371510218, 671023532, 1109518272, 1964708132

Basic calculations (n = 21131891)

Multiplication

n×y

n×2	42263782
n×3	63395673
n×4	84527564
n×5	105659455

Division

n÷y

n÷2	10565945.5
n÷3	7043963.6666667
n÷3	5282972.75
n÷5	4226378.2

Exponentiation

n^y

n²	446556817235881
n³	9.4365899871356E+21
n⁴	1.9941299101984E+29
n⁵	4.2139735902152E+36

Nth Root

^y√n

²√n	4596.9436585627
³√n	276.46879563098
⁴√n	67.800764439368
⁵√n	29.173442028539

Divisors of 21131891

1, 11, 229, 2519, 8389, 92279, 1921081, 21131891

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	-21131890	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 21131891 can be divided by 8 positive divisors. The sum of these divisors (counting 21131891) is 1, the average is 0.125.

Base conversion 21131891

Base	System	Value
2	Binary	1010000100111001001110011
3	Ternary	1110202121111122
4	Quaternary	1100213021303
5	Quinary	20402210031
6	Senary	2032532455
8	Octal	120471163
10	Decimal	21131891
12	Duodecimal	70b112b
16	Hexadecimal	1427273
20	Vigesimal	6c19eb
36	Base36	ckxgz

Cryptographic Hash Functions

md5	b7b064e801ebbccff2cecee5fe1cc035
sha1	9da2e0edac365bee5dbb230350ed42b4244be771
sha256	389b3237386f3722fda11d45f74fc934def1ae924be41a24d422da8d28733c9b
sha512	d5b39d2a99bfe7ff5cb6715196aeefa4fa3002d61cc74c5be8e137bcd7c32511a46086e15797e3cef7fb85fda86748a7cca0941a37dc03908d5411865453c570
ripemd-160	dcf48cc869dbc3736688cf3d087797dbb5603440

21131891 as geometric shapes

Circle

Radius = n

Diameter	42263782
Circumference	132775587.04412
Area	1.4028996164387E+15

Sphere

Radius = n

Volume	3.9527895704699E+22
Surface area	5.6115984657547E+15
Circumference	132775587.04412

Square

Length = n

Perimeter	84527564
Area	446556817235881
Diagonal	29885006.85079

Cube

Length = n

Surface area	2679340903415286
Volume	9.4365899871356E+21
Space diagonal	36601508.872007

Equilateral Triangle

Length = n

Perimeter	63395673
Area	1.933647739797E+14
Altitude	18300754.436004

Triangular Pyramid

Length = n

Surface area	1.933647739797E+14
Volume	1.1121127951968E+21
Height	9961668.9502633