20391245 (number)

20391245 is an odd 8-digits composite number following 20391244 and preceding 20391246. In scientific notation, it is written as 2.0391245 × 10^7. The sum of its digits is 26. It has a total of 5 prime factors and 32 positive divisors. There are 12837888 positive integers (up to 20391245) that are relatively prime to 20391245.

Interesting facts

Basic properties

Name

Name twenty million three hundred ninety-one thousand two hundred forty-five

Notation

Scientific notation 2.0391245 × 10^7
Engineering notation 2.0391245 × 10^6

Prime Factorization of 20391245

Prime Factorization 5 × 17 × 43 × 7 × 797

Composite number
ω Distinct Factors 5
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 20391245
Product of the distinct prime numbers

The prime factorization of 20391245 is 5 × 17 × 43 × 7 × 797. Since it has a total of 5 prime factors.

Most popular turbo-numbers

4, 9, 10, 31, 475, 678, 7938, 9977, 34895, 11797, 43328, 421491, 6896177, 8062495, 86341132, 29308431, 563681307, 831767339, 1678997738, 5563082969

Basic calculations (n = 20391245)

Multiplication

n×y
n×2 40782490
n×3 61173735
n×4 81564980
n×5 101956225

Division

n÷y
n÷2 10195622.5
n÷3 6797081.6666667
n÷3 5097811.25
n÷5 4078249

Exponentiation

ny
n2 415802872650025
n3 8.4787382479105E+21
n4 1.7289202890401E+29
n5 3.5254837199288E+36

Nth Root

y√n
2√n 4515.6666174553
3√n 273.20034759618
4√n 67.198709938921
5√n 28.966014819798

Divisors of 20391245

1, 5, 7, 17, 35, 43, 85, 119, 215, 301, 595, 731, 797, 1505, 3655, 3985, 5117, 5579, 13549, 25585, 27895, 34271, 67745, 94843, 171355, 239897, 474215, 582607, 1199485, 2913035, 4078249, 20391245

32 divisors

τ Total Divisors 32
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -20391244
Sum of the proper positive divisors of n
A Arithmetic Mean 0.03125
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 32
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 20391245 can be divided by 32 positive divisors. The sum of these divisors (counting 20391245) is 1, the average is 0.03125.

Base conversion 20391245

Base System Value
2 Binary 1001101110010010101001101
3 Ternary 1102100222112022
4 Quaternary 1031302111031
5 Quinary 20210004440
6 Senary 2005015525
8 Octal 115622515
10 Decimal 20391245
12 Duodecimal 69b45a5
16 Hexadecimal 137254d
20 Vigesimal 678i25
36 Base36 c51zh

Cryptographic Hash Functions

md5 f0dec7fe3c28edc42d7341b3f3363294
sha1 ae57e75406e0372216bd5759acb702421f1d0ea9
sha256 cad7b8dce06d252151f2c5d23e7846764df7f0a7a1223561301492bc6af042f8
sha512 f62eedbe4e8ff28cef8f2734c78157b71507fcd92afdfbb8fe1f7d9ddc396ab7f2d04ae8571c5ecd572bfd173c147c20e4446dd215a3d9ad04dbc61f737d8185
ripemd-160 feed1747babf7af75cfb999ebc038e0dcb65325f

20391245 as geometric shapes

Circle

Radius = n
Diameter 40782490
Circumference 128121970.9791
Area 1.3062832500589E+15

Sphere

Radius = n
Volume 3.5515655721795E+22
Surface area 5.2251330002354E+15
Circumference 128121970.9791

Square

Length = n
Perimeter 81564980
Area 415802872650025
Diagonal 28837575.232673

Cube

Length = n
Surface area 2494817235900150
Volume 8.4787382479105E+21
Space diagonal 35318672.369585

Equilateral Triangle

Length = n
Perimeter 61173735
Area 1.8004792534073E+14
Altitude 17659336.184792

Triangular Pyramid

Length = n
Surface area 1.8004792534073E+14
Volume 9.9922888516721E+20
Height 9612525.0775575