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

21000813 (number)

21000813 is an odd 8-digits composite number following 21000812 and preceding 21000814. In scientific notation, it is written as 2.1000813 × 10^7. The sum of its digits is 15. It has a total of 3 prime factors and 8 positive divisors. There are 13600944 positive integers (up to 21000813) that are relatively prime to 21000813.

Interesting facts

21000813 has 8 divisors, whose sum is 21278400
The reverse of 21000813 is 31800012
Previous prime number is 263

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 15
Digital Root 6

Name

Name	twenty-one million eight hundred thirteen

Notation

Scientific notation	2.1000813 × 10^7
Engineering notation	2.1000813 × 10^6

Prime Factorization of 21000813

Prime Factorization 129 × 263 × 619

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21000813	Product of the distinct prime numbers

The prime factorization of 21000813 is 129 × 263 × 619. Since it has a total of 3 prime factors.

Most popular turbo-numbers

10, 4, 97, 26, 403, 324, 6421, 1606, 30365, 41328, 154816, 574364, 7672670, 2206496, 21649663, 76159134, 637970777, 599218471, 504228677, 2188903674

Basic calculations (n = 21000813)

Multiplication

n×y

n×2	42001626
n×3	63002439
n×4	84003252
n×5	105004065

Division

n÷y

n÷2	10500406.5
n÷3	7000271
n÷3	5250203.25
n÷5	4200162.6

Exponentiation

n^y

n²	441034146660969
n³	9.2620756406416E+21
n⁴	1.9451111852097E+29
n⁵	4.0848916264797E+36

Nth Root

^y√n

²√n	4582.6643996697
³√n	275.89597791813
⁴√n	67.695379455837
⁵√n	29.13716018539

Divisors of 21000813

1, 129, 263, 619, 33927, 79851, 162797, 21000813

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	-21000812	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 21000813 can be divided by 8 positive divisors. The sum of these divisors (counting 21000813) is 1, the average is 0.125.

Base conversion 21000813

Base	System	Value
2	Binary	1010000000111001001101101
3	Ternary	1110111221200220
4	Quaternary	1100013021231
5	Quinary	20334011223
6	Senary	2030041553
8	Octal	120071155
10	Decimal	21000813
12	Duodecimal	70492b9
16	Hexadecimal	140726d
20	Vigesimal	6b520d
36	Base36	ci4bx

Cryptographic Hash Functions

md5	36b7bd6c5cd51e2da8383c52e441de58
sha1	34b44eecd119e7041cd4c410ad9991efea37ef42
sha256	afdf45d10c4895f00a1f7cce0f0a181bfddf01e730b9f1d7697395152e2ae632
sha512	a70b75ef7b888569f2f64f9269b1ab9b87b287d0cd917725fcf6594fcc07ebd787c7340bfbe5e4861519b0c8e212cf2302c9ef914eec24b308c62c7fca9e08fa
ripemd-160	98ea1f85c72a78873539355a9162ba2212a55971

21000813 as geometric shapes

Circle

Radius = n

Diameter	42001626
Circumference	131951999.68043
Area	1.3855496351323E+15

Sphere

Radius = n

Volume	3.879689171951E+22
Surface area	5.5421985405294E+15
Circumference	131951999.68043

Square

Length = n

Perimeter	84003252
Area	441034146660969
Diagonal	29699634.565461

Cube

Length = n

Surface area	2646204879965814
Volume	9.2620756406416E+21
Space diagonal	36374475.116253

Equilateral Triangle

Length = n

Perimeter	63002439
Area	1.909733874724E+14
Altitude	18187237.558126

Triangular Pyramid

Length = n

Surface area	1.909733874724E+14
Volume	1.0915460822267E+21
Height	9899878.1884871