81782020 (number)

81782020 is an even 8-digits composite number following 81782019 and preceding 81782021. In scientific notation, it is written as 8.1782020 × 10^7. The sum of its digits is 28. It has a total of 5 prime factors and 24 positive divisors. There are 31290336 positive integers (up to 81782020) that are relatively prime to 81782020.

Interesting facts

Basic properties

Name

Name eighty-one million seven hundred eighty-two thousand twenty

Notation

Scientific notation 8.1782020 × 10^7
Engineering notation 8.1782020 × 10^6

Prime Factorization of 81782020

Prime Factorization 2 × 2 × 23 × 5 × 177787

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 5
Total number of prime factors
rad Radical 40891010
Product of the distinct prime numbers

The prime factorization of 81782020 is 2 × 2 × 23 × 5 × 177787. Since it has a total of 5 prime factors.

Most popular turbo-numbers

2, 10, 45, 48, 600, 443, 560, 4252, 48037, 2849, 154266, 14640, 8284722, 9673332, 49952819, 62707749, 479669076, 89507072, 641006845, 6945229165

Basic calculations (n = 81782020)

Multiplication

n×y
n×2 163564040
n×3 245346060
n×4 327128080
n×5 408910100

Division

n÷y
n÷2 40891010
n÷3 27260673.333333
n÷3 20445505
n÷5 16356404

Exponentiation

ny
n2 6688298795280400
n3 5.469825858416E+23
n4 4.4733340774949E+31
n5 3.6583829699237E+39

Nth Root

y√n
2√n 9043.3411967038
3√n 434.0628435122
4√n 95.096483619027
5√n 38.241204824446

Divisors of 81782020

1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 177787, 355574, 711148, 888935, 1777870, 3555740, 4089101, 8178202, 16356404, 20445505, 40891010, 81782020

24 divisors

τ Total Divisors 24
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -81782019
Sum of the proper positive divisors of n
A Arithmetic Mean 0.041666666666667
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 24
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81782020 can be divided by 24 positive divisors. The sum of these divisors (counting 81782020) is 1, the average is 0.041666666666667.

Base conversion 81782020

Base System Value
2 Binary 100110111111110010100000100
3 Ternary 12200212221211201
4 Quaternary 10313332110010
5 Quinary 131414011040
6 Senary 12040512244
8 Octal 467762404
10 Decimal 81782020
12 Duodecimal 2347b684
16 Hexadecimal 4dfe504
20 Vigesimal 15b2f10
36 Base36 1coves

Cryptographic Hash Functions

md5 d072d4ea15727faf06063d1f355e8546
sha1 78df10433333c8bd816f3e6ae4140bfead860b96
sha256 04a8ae87b9c43ae69af48190555eeb5239b0d847bb3fcbfa6ff92ea0206e4b41
sha512 c091b23ecd1f016659d0a9580a7a5fcfa0a09c53a0b317a0cca5534721f35a12904199c84d88afcf636bc503b82a5f47b6337bbb758b11692f68706b03603e2b
ripemd-160 41a5461218be13681ab071f4bcf294f499718796

81782020 as geometric shapes

Circle

Radius = n
Diameter 163564040
Circumference 513851586.45547
Area 2.1011910360266E+16

Sphere

Radius = n
Volume 2.291195297762E+24
Surface area 8.4047641441065E+16
Circumference 513851586.45547

Square

Length = n
Perimeter 327128080
Area 6688298795280400
Diagonal 115657241.84227

Cube

Length = n
Surface area 40129792771682400
Volume 5.469825858416E+23
Space diagonal 141650613.78561

Equilateral Triangle

Length = n
Perimeter 245346060
Area 2.8961183324068E+15
Altitude 70825306.892807

Triangular Pyramid

Length = n
Surface area 2.8961183324068E+15
Volume 6.4462515939924E+22
Height 38552413.947423