21081808 (number)

21081808 is an even 8-digits composite number following 21081807 and preceding 21081809. In scientific notation, it is written as 2.1081808 × 10^7. The sum of its digits is 28. It has a total of 6 prime factors and 20 positive divisors. There are 9582560 positive integers (up to 21081808) that are relatively prime to 21081808.

Interesting facts

Basic properties

Name

Name twenty-one million eighty-one thousand eight hundred eight

Notation

Scientific notation 2.1081808 × 10^7
Engineering notation 2.1081808 × 10^6

Prime Factorization of 21081808

Prime Factorization 2 × 2 × 2 × 2 × 11 × 119783

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 6
Total number of prime factors
rad Radical 2635226
Product of the distinct prime numbers

The prime factorization of 21081808 is 2 × 2 × 2 × 2 × 11 × 119783. Since it has a total of 6 prime factors.

Most popular turbo-numbers

10, 1, 15, 87, 178, 103, 7567, 5315, 60132, 83340, 321297, 883175, 7120884, 1863278, 32584999, 34167263, 175695179, 451484892, 3940458602, 9312246614

Basic calculations (n = 21081808)

Multiplication

n×y
n×2 42163616
n×3 63245424
n×4 84327232
n×5 105409040

Division

n÷y
n÷2 10540904
n÷3 7027269.3333333
n÷3 5270452
n÷5 4216361.6

Exponentiation

ny
n2 444442628548864
n3 9.3696541620825E+21
n4 1.9752925007142E+29
n5 4.1642737243897E+36

Nth Root

y√n
2√n 4591.4930033705
3√n 276.25021068349
4√n 67.760556398029
5√n 29.159600573477

Divisors of 21081808

1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 119783, 239566, 479132, 958264, 1317613, 1916528, 2635226, 5270452, 10540904, 21081808

20 divisors

τ Total Divisors 20
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -21081807
Sum of the proper positive divisors of n
A Arithmetic Mean 0.05
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 20
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 21081808 can be divided by 20 positive divisors. The sum of these divisors (counting 21081808) is 1, the average is 0.05.

Base conversion 21081808

Base System Value
2 Binary 1010000011010111011010000
3 Ternary 1110200001210201
4 Quaternary 1100122323100
5 Quinary 20344104213
6 Senary 2031504544
8 Octal 120327320
10 Decimal 21081808
12 Duodecimal 7088154
16 Hexadecimal 141aed0
20 Vigesimal 6bf4a8
36 Base36 cjuts

Cryptographic Hash Functions

md5 b90f964fb8d947b0219b73719a0b4ce7
sha1 256925fd548dba9f6512b2b83743de28f7889712
sha256 5fbd8209e5cf8ed2cc53c3a72a46173183afb84d4da5966cf2b82180a5570f7b
sha512 9e781f95fc8ae766b779770a1136c9157494564141b2fadde1629b3c74b1f66b70e28262bf2dcabb28389c697c01a7578daf0439e48d14801a345582cc90508f
ripemd-160 74729174c68efa8ff5e0399ca60af359a06e5c3d

21081808 as geometric shapes

Circle

Radius = n
Diameter 42163616
Circumference 132460906.27438
Area 1.3962576967912E+15

Sphere

Radius = n
Volume 3.9247515576367E+22
Surface area 5.585030787165E+15
Circumference 132460906.27438

Square

Length = n
Perimeter 84327232
Area 444442628548864
Diagonal 29814178.792946

Cube

Length = n
Surface area 2666655771293184
Volume 9.3696541620825E+21
Space diagonal 36514762.571412

Equilateral Triangle

Length = n
Perimeter 63245424
Area 1.9244930342402E+14
Altitude 18257381.285706

Triangular Pyramid

Length = n
Surface area 1.9244930342402E+14
Volume 1.1042243325635E+21
Height 9938059.5976485