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

21081431 (number)

21081431 is an odd 8-digits composite number following 21081430 and preceding 21081432. In scientific notation, it is written as 2.1081431 × 10^7. The sum of its digits is 20. It has a total of 3 prime factors and 8 positive divisors. There are 17118648 positive integers (up to 21081431) that are relatively prime to 21081431.

Interesting facts

21081431 has 8 divisors, whose sum is 25361280
The reverse of 21081431 is 13418012
Previous prime number is 19

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2

Name

Name	twenty-one million eighty-one thousand four hundred thirty-one

Notation

Scientific notation	2.1081431 × 10^7
Engineering notation	2.1081431 × 10^6

Prime Factorization of 21081431

Prime Factorization 7 × 19 × 158507

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21081431	Product of the distinct prime numbers

The prime factorization of 21081431 is 7 × 19 × 158507. Since it has a total of 3 prime factors.

Most popular turbo-numbers

9, 3, 93, 19, 368, 166, 7575, 1751, 11448, 2586, 395362, 906213, 8439224, 8673912, 98611370, 61336514, 728570991, 498720416, 4211558771, 4403491435

Basic calculations (n = 21081431)

Multiplication

n×y

n×2	42162862
n×3	63244293
n×4	84325724
n×5	105407155

Division

n÷y

n÷2	10540715.5
n÷3	7027143.6666667
n÷3	5270357.75
n÷5	4216286.2

Exponentiation

n^y

n²	444426733007761
n³	9.3691515064585E+21
n⁴	1.9751512101195E+29
n⁵	4.1639013950701E+36

Nth Root

^y√n

²√n	4591.4519490026
³√n	276.24856397225
⁴√n	67.760253460289
⁵√n	29.159496282156

Divisors of 21081431

1, 7, 19, 133, 158507, 1109549, 3011633, 21081431

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	-21081430	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 21081431 can be divided by 8 positive divisors. The sum of these divisors (counting 21081431) is 1, the average is 0.125.

Base conversion 21081431

Base	System	Value
2	Binary	1010000011010110101010111
3	Ternary	1110200001021202
4	Quaternary	1100122311113
5	Quinary	20344101211
6	Senary	2031503115
8	Octal	120326527
10	Decimal	21081431
12	Duodecimal	7087a9b
16	Hexadecimal	141ad57
20	Vigesimal	6bf3bb
36	Base36	cjujb

Cryptographic Hash Functions

md5	05524c32e88962651dab30aace6b64f8
sha1	37be6cd63252170e5057cb529c777bf292d068be
sha256	b682ccb0d5ae909814b5f458ef2ae4ac98e5ac1d2de8c2b13adaf98e533a2985
sha512	1367295a7c4c0710801d6937f6ef82fc8c3f0b73a2f5f761d50350818e59de435431809150af86de8984c817dd302759ed7b9b46658ccd97c31600979fb4e583
ripemd-160	dcd7a092f844db44afb4aa9e2890496b20683363

21081431 as geometric shapes

Circle

Radius = n

Diameter	42162862
Circumference	132458537.51352
Area	1.3962077594761E+15

Sphere

Radius = n

Volume	3.9245410057413E+22
Surface area	5.5848310379044E+15
Circumference	132458537.51352

Square

Length = n

Perimeter	84325724
Area	444426733007761
Diagonal	29813645.634433

Cube

Length = n

Surface area	2666560398046566
Volume	9.3691515064585E+21
Space diagonal	36514109.588258

Equilateral Triangle

Length = n

Perimeter	63244293
Area	1.9244242045282E+14
Altitude	18257054.794129

Triangular Pyramid

Length = n

Surface area	1.9244242045282E+14
Volume	1.1041650940302E+21
Height	9937881.8781442