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

21007831 (number)

21007831 is an odd 8-digits composite number following 21007830 and preceding 21007832. In scientific notation, it is written as 2.1007831 × 10^7. The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors. There are 19391832 positive integers (up to 21007831) that are relatively prime to 21007831.

Interesting facts

21007831 has 4 divisors, whose sum is 22623832
The reverse of 21007831 is 13870012
Previous prime number is 13

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4

Name

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

Notation

Scientific notation	2.1007831 × 10^7
Engineering notation	2.1007831 × 10^6

Prime Factorization of 21007831

Prime Factorization 13 × 1615987

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	21007831	Product of the distinct prime numbers

The prime factorization of 21007831 is 13 × 1615987. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 2, 70, 5, 51, 469, 5434, 9225, 81905, 32373, 425373, 29793, 2064978, 6382416, 54431063, 35376689, 822869216, 364214539, 3727319348, 6076590415

Basic calculations (n = 21007831)

Multiplication

n×y

n×2	42015662
n×3	63023493
n×4	84031324
n×5	105039155

Division

n÷y

n÷2	10503915.5
n÷3	7002610.3333333
n÷3	5251957.75
n÷5	4201566.2

Exponentiation

n^y

n²	441328963324561
n³	9.2713642769276E+21
n⁴	1.9477125386913E+29
n⁵	4.0917215849408E+36

Nth Root

^y√n

²√n	4583.4300474645
³√n	275.92670724165
⁴√n	67.701034316061
⁵√n	29.139107322027

Divisors of 21007831

1, 13, 1615987, 21007831

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	-21007830	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 21007831 can be divided by 4 positive divisors. The sum of these divisors (counting 21007831) is 1, the average is 0.25.

Base conversion 21007831

Base	System	Value
2	Binary	1010000001000110111010111
3	Ternary	1110112022022211
4	Quaternary	1100020313113
5	Quinary	20334222311
6	Senary	2030134251
8	Octal	120106727
10	Decimal	21007831
12	Duodecimal	7051387
16	Hexadecimal	1408dd7
20	Vigesimal	6b5jbb
36	Base36	ci9qv

Cryptographic Hash Functions

md5	40f8dcda680e98a3d1a474f866838afe
sha1	18c4cf8304bd2e76087ba40f4d96d6c54ac5bf0e
sha256	4a14ab9b9cfa462712068cfc2a9a6bb83967333b916513f9a353f32de0d85252
sha512	51216b3a5cd97a7a8c0153352c67bcb180e29828926c0fee6ebe3ff82cbd0f0baccd0542634222463110b9e954652883a3a53966800159c039e2ded58bf5ba2f
ripemd-160	7d457e5fc9bf89b4f70bcb3c7a7a96d9aabdd117

21007831 as geometric shapes

Circle

Radius = n

Diameter	42015662
Circumference	131996095.07491
Area	1.3864758289968E+15

Sphere

Radius = n

Volume	3.8835799868201E+22
Surface area	5.5459033159874E+15
Circumference	131996095.07491

Square

Length = n

Perimeter	84031324
Area	441328963324561
Diagonal	29709559.516242

Cube

Length = n

Surface area	2647973779947366
Volume	9.2713642769276E+21
Space diagonal	36386630.64882

Equilateral Triangle

Length = n

Perimeter	63023493
Area	1.9110104683246E+14
Altitude	18193315.32441

Triangular Pyramid

Length = n

Surface area	1.9110104683246E+14
Volume	1.092640758511E+21
Height	9903186.505414