21391806 (number)

21391806 is an even 8-digits composite number following 21391805 and preceding 21391807. In scientific notation, it is written as 2.1391806 × 10^7. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 7099008 positive integers (up to 21391806) that are relatively prime to 21391806.

Interesting facts

Basic properties

Name

Name twenty-one million three hundred ninety-one thousand eight hundred six

Notation

Scientific notation 2.1391806 × 10^7
Engineering notation 2.1391806 × 10^6

Prime Factorization of 21391806

Prime Factorization 2 × 3 × 229 × 15569

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 21391806
Product of the distinct prime numbers

The prime factorization of 21391806 is 2 × 3 × 229 × 15569. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 6, 40, 64, 723, 729, 265, 5548, 6274, 60674, 735427, 950683, 406147, 4199408, 19585233, 30928842, 948445517, 127846355, 1530367635, 3501815923

Basic calculations (n = 21391806)

Multiplication

n×y
n×2 42783612
n×3 64175418
n×4 85567224
n×5 106959030

Division

n÷y
n÷2 10695903
n÷3 7130602
n÷3 5347951.5
n÷5 4278361.2

Exponentiation

ny
n2 457609363941636
n3 9.7890907372229E+21
n4 2.0940632996707E+29
n5 4.4795795858275E+36

Nth Root

y√n
2√n 4625.1276739134
3√n 277.59767035116
4√n 68.008291214479
5√n 29.244856202671

Divisors of 21391806

1, 2, 3, 6, 229, 458, 687, 1374, 15569, 31138, 46707, 93414, 3565301, 7130602, 10695903, 21391806

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 -21391805
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 21391806 can be divided by 16 positive divisors. The sum of these divisors (counting 21391806) is 1, the average is 0.0625.

Base conversion 21391806

Base System Value
2 Binary 1010001100110100110111110
3 Ternary 1111020211001010
4 Quaternary 1101212212332
5 Quinary 20434014211
6 Senary 2042300050
8 Octal 121464676
10 Decimal 21391806
12 Duodecimal 71b7626
16 Hexadecimal 14669be
20 Vigesimal 6ddja6
36 Base36 cqi0u

Cryptographic Hash Functions

md5 153465c1fb5aece9264eefc6c1658350
sha1 6061ed175c5a0709c35a734cb73f19210fe59c50
sha256 d092267c417ab5ea5f033ba95879ef8af85e12176e643fca8e44d862d8c817c5
sha512 736f8d648c5577e8374163a2727e666feb30dfa4f141fa24656f83511db310114bbaca40fff644f288f16d18ed580ed40623352cc59f6ebc4f2f4243b4fb24a6
ripemd-160 84bacf1752626bf0b964249f6e9cc15df113385c

21391806 as geometric shapes

Circle

Radius = n
Diameter 42783612
Circumference 134408681.15324
Area 1.4376222159729E+15

Sphere

Radius = n
Volume 4.1004447393844E+22
Surface area 5.7504888638918E+15
Circumference 134408681.15324

Square

Length = n
Perimeter 85567224
Area 457609363941636
Diagonal 30252582.168854

Cube

Length = n
Surface area 2745656183649816
Volume 9.7890907372229E+21
Space diagonal 37051694.857657

Equilateral Triangle

Length = n
Perimeter 64175418
Area 1.9815066709155E+14
Altitude 18525847.428828

Triangular Pyramid

Length = n
Surface area 1.9815066709155E+14
Volume 1.1536554069901E+21
Height 10084194.056285