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

21000861 (number)

21000861 is an odd 8-digits composite number following 21000860 and preceding 21000862. In scientific notation, it is written as 2.1000861 × 10^7. The sum of its digits is 18. It has a total of 5 prime factors and 16 positive divisors. There are 11998728 positive integers (up to 21000861) that are relatively prime to 21000861.

Interesting facts

21000861 has 16 divisors, whose sum is 27216000
The reverse of 21000861 is 16800012
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9

Name

Name	twenty-one million eight hundred sixty-one

Notation

Scientific notation	2.1000861 × 10^7
Engineering notation	2.1000861 × 10^6

Prime Factorization of 21000861

Prime Factorization 9 × 7 × 7 × 7 × 6803

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	5	Total number of prime factors
rad	Radical	428589	Product of the distinct prime numbers

The prime factorization of 21000861 is 9 × 7 × 7 × 7 × 6803. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 7, 46, 40, 45, 199, 4072, 5634, 20172, 50606, 793165, 516074, 2333690, 7908428, 84385553, 92589886, 405081300, 620266284, 2277358301, 6113561357

Basic calculations (n = 21000861)

Multiplication

n×y

n×2	42001722
n×3	63002583
n×4	84003444
n×5	105004305

Division

n÷y

n÷2	10500430.5
n÷3	7000287
n÷3	5250215.25
n÷5	4200172.2

Exponentiation

n^y

n²	441036162741321
n³	9.2621391497039E+21
n⁴	1.9451289684559E+29
n⁵	4.0849383093616E+36

Nth Root

^y√n

²√n	4582.6696367947
³√n	275.89618811629
⁴√n	67.69541813738
⁵√n	29.137173504707

Divisors of 21000861

1, 7, 9, 49, 63, 343, 441, 3087, 6803, 47621, 61227, 333347, 428589, 2333429, 3000123, 21000861

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-21000860	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	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	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21000861 can be divided by 16 positive divisors. The sum of these divisors (counting 21000861) is 1, the average is 0.0625.

Base conversion 21000861

Base	System	Value
2	Binary	1010000000111001010011101
3	Ternary	1110111221202200
4	Quaternary	1100013022131
5	Quinary	20334011421
6	Senary	2030042113
8	Octal	120071235
10	Decimal	21000861
12	Duodecimal	7049339
16	Hexadecimal	140729d
20	Vigesimal	6b5231
36	Base36	ci4d9

Cryptographic Hash Functions

md5	af98d9f9e113efe089fc3cccc1fef10c
sha1	855b1af5598f6ff3f672f421dbeebdd4cbb8fe64
sha256	4a31795b98d14c873e7035c71c2a2311e8ca3391f003c0ca9eaa0bf06f7b33ea
sha512	519408c5b11747d5552a15bedf9cc6ec84fc35c3e72fefc6061613aef94326b3c0f9a1240462527e100a70c1a9f46bb8eec8cf2b20835737d3509ce5c0794c24
ripemd-160	344717bb11e2ab0a8961febd6f3c7ac66cc8b07e

21000861 as geometric shapes

Circle

Radius = n

Diameter	42001722
Circumference	131952301.27332
Area	1.3855559688356E+15

Sphere

Radius = n

Volume	3.8797157745648E+22
Surface area	5.5422238753423E+15
Circumference	131952301.27332

Square

Length = n

Perimeter	84003444
Area	441036162741321
Diagonal	29699702.447712

Cube

Length = n

Surface area	2646216976447926
Volume	9.2621391497039E+21
Space diagonal	36374558.254692

Equilateral Triangle

Length = n

Perimeter	63002583
Area	1.909742604608E+14
Altitude	18187279.127346

Triangular Pyramid

Length = n

Surface area	1.909742604608E+14
Volume	1.0915535668415E+21
Height	9899900.8159041