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

21031687 (number)

21031687 is an odd 8-digits composite number following 21031686 and preceding 21031688. In scientific notation, it is written as 2.1031687 × 10^7. The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors. There are 20542536 positive integers (up to 21031687) that are relatively prime to 21031687.

Interesting facts

21031687 has 4 divisors, whose sum is 21520840
The reverse of 21031687 is 78613012
Previous prime number is 43

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1

Name

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

Notation

Scientific notation	2.1031687 × 10^7
Engineering notation	2.1031687 × 10^6

Prime Factorization of 21031687

Prime Factorization 43 × 489109

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21031687	Product of the distinct prime numbers

The prime factorization of 21031687 is 43 × 489109. Since it has a total of 2 prime factors.

Most popular turbo-numbers

5, 9, 17, 11, 478, 615, 2211, 553, 27006, 18148, 16396, 99242, 7254761, 9529363, 16066483, 57947894, 335452285, 131463049, 2743871477, 5568202721

Basic calculations (n = 21031687)

Multiplication

n×y

n×2	42063374
n×3	63095061
n×4	84126748
n×5	105158435

Division

n÷y

n÷2	10515843.5
n÷3	7010562.3333333
n÷3	5257921.75
n÷5	4206337.4

Exponentiation

n^y

n²	442331858065969
n³	9.3029851889719E+21
n⁴	1.9565747266009E+29
n⁵	4.1150067241981E+36

Nth Root

^y√n

²√n	4586.0317268855
³√n	276.03111302969
⁴√n	67.720246063385
⁵√n	29.145722255328

Divisors of 21031687

1, 43, 489109, 21031687

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	-21031686	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 21031687 can be divided by 4 positive divisors. The sum of these divisors (counting 21031687) is 1, the average is 0.25.

Base conversion 21031687

Base	System	Value
2	Binary	1010000001110101100000111
3	Ternary	1110120112001101
4	Quaternary	1100032230013
5	Quinary	20341003222
6	Senary	2030440531
8	Octal	120165407
10	Decimal	21031687
12	Duodecimal	7063147
16	Hexadecimal	140eb07
20	Vigesimal	6b8j47
36	Base36	cis5j

Cryptographic Hash Functions

md5	a97a6592bd6a6995bbbc6d0e1b874d2e
sha1	13830b2575dc375405e5695abc88492b24bed539
sha256	6a826629e8eb3c9caedc2a798e594d71ddb8c993bcb533f0777c2d6e21b95d17
sha512	1cbf0d5898ce3c0c1433b858f0469734767b55327e42b3ef15d3bd9c6a8d36b0632a679f651a613c5258de700857c86710e4dbe2319923a3407f5fd25659b527
ripemd-160	9254d046d94e717d18af95b025727218f9c4dfb4

21031687 as geometric shapes

Circle

Radius = n

Diameter	42063374
Circumference	132145986.7436
Area	1.3896265157488E+15

Sphere

Radius = n

Volume	3.8968253234838E+22
Surface area	5.5585060629951E+15
Circumference	132145986.7436

Square

Length = n

Perimeter	84126748
Area	442331858065969
Diagonal	29743296.994986

Cube

Length = n

Surface area	2653991148395814
Volume	9.3029851889719E+21
Space diagonal	36427950.452886

Equilateral Triangle

Length = n

Perimeter	63095061
Area	1.9153531299415E+14
Altitude	18213975.226443

Triangular Pyramid

Length = n

Surface area	1.9153531299415E+14
Volume	1.0963673187333E+21
Height	9914432.331662