21018085 (number)

21018085 is an odd 8-digits composite number following 21018084 and preceding 21018086. In scientific notation, it is written as 2.1018085 × 10^7. The sum of its digits is 25. It has a total of 4 prime factors and 16 positive divisors. There are 14480640 positive integers (up to 21018085) that are relatively prime to 21018085.

Interesting facts

Basic properties

Name

Name twenty-one million eighteen thousand eighty-five

Notation

Scientific notation 2.1018085 × 10^7
Engineering notation 2.1018085 × 10^6

Prime Factorization of 21018085

Prime Factorization 19 × 5 × 11 × 20113

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21018085
Product of the distinct prime numbers

The prime factorization of 21018085 is 19 × 5 × 11 × 20113. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 6, 81, 42, 453, 474, 7334, 6365, 99746, 72807, 280406, 455460, 3746519, 6958026, 76601387, 90201729, 215860980, 774570689, 5863016196, 2213634152

Basic calculations (n = 21018085)

Multiplication

n×y
n×2 42036170
n×3 63054255
n×4 84072340
n×5 105090425

Division

n÷y
n÷2 10509042.5
n÷3 7006028.3333333
n÷3 5254521.25
n÷5 4203617

Exponentiation

ny
n2 441759897067225
n3 9.2849470661502E+21
n4 1.9515180665685E+29
n5 4.1017172602171E+36

Nth Root

y√n
2√n 4584.5485055783
3√n 275.97159355479
4√n 67.709294085659
5√n 29.141951348018

Divisors of 21018085

1, 5, 11, 19, 55, 95, 209, 1045, 20113, 100565, 221243, 382147, 1106215, 1910735, 4203617, 21018085

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 -21018084
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 21018085 can be divided by 16 positive divisors. The sum of these divisors (counting 21018085) is 1, the average is 0.0625.

Base conversion 21018085

Base System Value
2 Binary 1010000001011010111100101
3 Ternary 1110112211101121
4 Quaternary 1100023113211
5 Quinary 20340034320
6 Senary 2030253541
8 Octal 120132745
10 Decimal 21018085
12 Duodecimal 70572b1
16 Hexadecimal 140b5e5
20 Vigesimal 6b7545
36 Base36 cihnp

Cryptographic Hash Functions

md5 4f0bece386b3b39ad824f2a869eaacf2
sha1 fb1481f46da43d4b664f287b8b3f7757fda41f29
sha256 fe50bcf9f1f2fc7d764800035ac1ff554c0a976f6f6fea498f83b34907d53c2f
sha512 bd5f892c2079c72220fbcceef14935462241a4d87124eb7d139d97343fd4501738bea7b9f42b15d3b494a01aa85a36e8bcf706f880821e671550a8af9e925608
ripemd-160 f86deab4900ccc173a445fd5bc98321045262727

21018085 as geometric shapes

Circle

Radius = n
Diameter 42036170
Circumference 132060522.85705
Area 1.387829647277E+15

Sphere

Radius = n
Volume 3.889269532265E+22
Surface area 5.5513185891079E+15
Circumference 132060522.85705

Square

Length = n
Perimeter 84072340
Area 441759897067225
Diagonal 29724060.862111

Cube

Length = n
Surface area 2650559382403350
Volume 9.2849470661502E+21
Space diagonal 36404391.097801

Equilateral Triangle

Length = n
Perimeter 63054255
Area 1.9128764661671E+14
Altitude 18202195.548901

Triangular Pyramid

Length = n
Surface area 1.9128764661671E+14
Volume 1.0942415055722E+21
Height 9908020.2873702