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

21000805 (number)

21000805 is an odd 8-digits composite number following 21000804 and preceding 21000806. In scientific notation, it is written as 2.1000805 × 10^7. The sum of its digits is 16. It has a total of 3 prime factors and 8 positive divisors. There are 14300352 positive integers (up to 21000805) that are relatively prime to 21000805.

Interesting facts

21000805 has 8 divisors, whose sum is 21751200
The reverse of 21000805 is 50800012
Previous prime number is 149

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 16
Digital Root 7

Name

Name	twenty-one million eight hundred five

Notation

Scientific notation	2.1000805 × 10^7
Engineering notation	2.1000805 × 10^6

Prime Factorization of 21000805

Prime Factorization 35 × 149 × 4027

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21000805	Product of the distinct prime numbers

The prime factorization of 21000805 is 35 × 149 × 4027. Since it has a total of 3 prime factors.

Most popular turbo-numbers

6, 8, 35, 84, 780, 872, 5848, 4525, 6661, 61681, 815652, 535945, 5751018, 8208326, 17287024, 44189389, 105801948, 616322942, 8513431747, 5734594028

Basic calculations (n = 21000805)

Multiplication

n×y

n×2	42001610
n×3	63002415
n×4	84003220
n×5	105004025

Division

n÷y

n÷2	10500402.5
n÷3	7000268.3333333
n÷3	5250201.25
n÷5	4200161

Exponentiation

n^y

n²	441033810648025
n³	9.2620650558261E+21
n⁴	1.9451082213472E+29
n⁵	4.0848838460409E+36

Nth Root

^y√n

²√n	4582.6635268149
³√n	275.89594288507
⁴√n	67.695373008906
⁵√n	29.137157965502

Divisors of 21000805

1, 35, 149, 4027, 5215, 140945, 600023, 21000805

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	-21000804	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 21000805 can be divided by 8 positive divisors. The sum of these divisors (counting 21000805) is 1, the average is 0.125.

Base conversion 21000805

Base	System	Value
2	Binary	1010000000111001001100101
3	Ternary	1110111221200121
4	Quaternary	1100013021211
5	Quinary	20334011210
6	Senary	2030041541
8	Octal	120071145
10	Decimal	21000805
12	Duodecimal	70492b1
16	Hexadecimal	1407265
20	Vigesimal	6b5205
36	Base36	ci4bp

Cryptographic Hash Functions

md5	8cc203aac0d2212c02257e8360ac2085
sha1	12860b1030dd0b1f6b4f358b7b49557487c31217
sha256	a3d171d879d58c450614a67c229feaad092f9b7dda4a69b894ba4ae678c83fb3
sha512	c3002ab7d71221e8bef7f64c3b73c276dd14f0cc279f48476e60de72a595eee33702254315431f58f960bb8b40d6ea3219f7c346b0434d795b7886fc7e4b73b2
ripemd-160	bc536b719e782f9b99d01eca262a8332985691ce

21000805 as geometric shapes

Circle

Radius = n

Diameter	42001610
Circumference	131951949.41494
Area	1.3855485795165E+15

Sphere

Radius = n

Volume	3.8796847381939E+22
Surface area	5.5421943180662E+15
Circumference	131951949.41494

Square

Length = n

Perimeter	84003220
Area	441033810648025
Diagonal	29699623.251753

Cube

Length = n

Surface area	2646202863888150
Volume	9.2620650558261E+21
Space diagonal	36374461.259847

Equilateral Triangle

Length = n

Perimeter	63002415
Area	1.9097324197452E+14
Altitude	18187230.629923

Triangular Pyramid

Length = n

Surface area	1.9097324197452E+14
Volume	1.0915448347943E+21
Height	9899874.4172509