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

21018081 (number)

21018081 is an odd 8-digits composite number following 21018080 and preceding 21018082. In scientific notation, it is written as 2.1018081 × 10^7. The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors. There are 12010320 positive integers (up to 21018081) that are relatively prime to 21018081.

Interesting facts

21018081 has 8 divisors, whose sum is 32027584
The reverse of 21018081 is 18081012
Previous prime number is 7

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3

Name

Name	twenty-one million eighteen thousand eighty-one

Notation

Scientific notation	2.1018081 × 10^7
Engineering notation	2.1018081 × 10^6

Prime Factorization of 21018081

Prime Factorization 3 × 7 × 1000861

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	21018081	Product of the distinct prime numbers

The prime factorization of 21018081 is 3 × 7 × 1000861. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 9, 84, 92, 619, 171, 3713, 1790, 56548, 23561, 177921, 448280, 8490164, 6400512, 6383454, 42260343, 52828163, 586617065, 7362770966, 8050868427

Basic calculations (n = 21018081)

Multiplication

n×y

n×2	42036162
n×3	63054243
n×4	84072324
n×5	105090405

Division

n÷y

n÷2	10509040.5
n÷3	7006027
n÷3	5254520.25
n÷5	4203616.2

Exponentiation

n^y

n²	441759728922561
n³	9.2849417650324E+21
n⁴	1.9515165809773E+29
n⁵	4.1017133571825E+36

Nth Root

^y√n

²√n	4584.5480693303
³√n	275.97157604786
⁴√n	67.709290864181
⁵√n	29.141950238804

Divisors of 21018081

1, 3, 7, 21, 1000861, 3002583, 7006027, 21018081

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	-21018080	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 21018081 can be divided by 8 positive divisors. The sum of these divisors (counting 21018081) is 1, the average is 0.125.

Base conversion 21018081

Base	System	Value
2	Binary	1010000001011010111100001
3	Ternary	1110112211101110
4	Quaternary	1100023113201
5	Quinary	20340034311
6	Senary	2030253533
8	Octal	120132741
10	Decimal	21018081
12	Duodecimal	70572a9
16	Hexadecimal	140b5e1
20	Vigesimal	6b7541
36	Base36	cihnl

Cryptographic Hash Functions

md5	2fb38caac7dff07854ea47df97cfe72e
sha1	1d6530561904e18db1f1561e21c97315c0c733e4
sha256	151ef91eace342059ab3cff0b4533e61c0af8b87652ec497373fcdd828eb8676
sha512	baee0aa4f35012d8cfa8c929782a70fc69e960a8d04bd2667b54e29c69f67954ef63507ee02e0a3a00fe02912348227b10e79ffb77a07385987e91de9f6e43a6
ripemd-160	ac1b799139023c727fa7bd7906937acc18584689

21018081 as geometric shapes

Circle

Radius = n

Diameter	42036162
Circumference	132060497.72431
Area	1.3878291190349E+15

Sphere

Radius = n

Volume	3.889267311738E+22
Surface area	5.5513164761397E+15
Circumference	132060497.72431

Square

Length = n

Perimeter	84072324
Area	441759728922561
Diagonal	29724055.205256

Cube

Length = n

Surface area	2650558373535366
Volume	9.2849417650324E+21
Space diagonal	36404384.169598

Equilateral Triangle

Length = n

Perimeter	63054243
Area	1.9128757380793E+14
Altitude	18202192.084799

Triangular Pyramid

Length = n

Surface area	1.9128757380793E+14
Volume	1.0942408808294E+21
Height	9908018.4017521