20391390 (number)

20391390 is an even 8-digits composite number following 20391389 and preceding 20391391. In scientific notation, it is written as 2.0391390 × 10^7. The sum of its digits is 27. It has a total of 4 prime factors and 16 positive divisors. There are 5437680 positive integers (up to 20391390) that are relatively prime to 20391390.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 2.0391390 × 10^7
Engineering notation 2.0391390 × 10^6

Prime Factorization of 20391390

Prime Factorization 2 × 9 × 5 × 226571

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 20391390
Product of the distinct prime numbers

The prime factorization of 20391390 is 2 × 9 × 5 × 226571. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 1, 15, 8, 728, 572, 7108, 4832, 38384, 54884, 990482, 526098, 9502532, 586678, 29561947, 37135196, 445691089, 736307025, 5465744415, 7486866804

Basic calculations (n = 20391390)

Multiplication

n×y
n×2 40782780
n×3 61174170
n×4 81565560
n×5 101956950

Division

n÷y
n÷2 10195695
n÷3 6797130
n÷3 5097847.5
n÷5 4078278

Exponentiation

ny
n2 415808786132100
n3 8.4789191234462E+21
n4 1.7289694662465E+29
n5 3.5256090684324E+36

Nth Root

y√n
2√n 4515.6826726421
3√n 273.20099516096
4√n 67.198829399344
5√n 28.966056014538

Divisors of 20391390

1, 2, 5, 9, 10, 18, 45, 90, 226571, 453142, 1132855, 2039139, 2265710, 4078278, 10195695, 20391390

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 -20391389
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 20391390 can be divided by 16 positive divisors. The sum of these divisors (counting 20391390) is 1, the average is 0.0625.

Base conversion 20391390

Base System Value
2 Binary 1001101110010010111011110
3 Ternary 1102100222201200
4 Quaternary 1031302113132
5 Quinary 20210011030
6 Senary 2005020330
8 Octal 115622736
10 Decimal 20391390
12 Duodecimal 69b46a6
16 Hexadecimal 13725de
20 Vigesimal 678i9a
36 Base36 c523i

Cryptographic Hash Functions

md5 13f79a7b0f3ba25ca7a4933e9435f219
sha1 33e5656a2b0817ca0faabe441263262ee81b8aa8
sha256 8d18f733ea2a8ef4e39ade259c77405d8e4e354f3d8679d26d9c20a880f9129a
sha512 f406369bc6f7852ccae68c4793e81a8441c616918e7f516fae0fca7b1adfea2a9b5a6b49496506979f7b563998eae4fb3296bf894e16b0c0a181503f5ba846e9
ripemd-160 eb9c1a7d24262b5bf1c4813d8793108d20e60ae2

20391390 as geometric shapes

Circle

Radius = n
Diameter 40782780
Circumference 128122882.04097
Area 1.3063018278107E+15

Sphere

Radius = n
Volume 3.5516413371468E+22
Surface area 5.2252073112428E+15
Circumference 128122882.04097

Square

Length = n
Perimeter 81565560
Area 415808786132100
Diagonal 28837780.293639

Cube

Length = n
Surface area 2494852716792600
Volume 8.4789191234462E+21
Space diagonal 35318923.516952

Equilateral Triangle

Length = n
Perimeter 61174170
Area 1.8005048595358E+14
Altitude 17659461.758476

Triangular Pyramid

Length = n
Surface area 1.8005048595358E+14
Volume 9.9925020155352E+20
Height 9612593.431213