128776821 (number)

128776821 is an odd 9-digits composite number following 128776820 and preceding 128776822. In scientific notation, it is written as 1.28776821 × 10^8. The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors. There are 83081760 positive integers (up to 128776821) that are relatively prime to 128776821.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million seven hundred seventy-six thousand eight hundred twenty-one

Notation

Scientific notation 1.28776821 × 10^8
Engineering notation 1.28776821 × 10^6

Prime Factorization of 128776821

Prime Factorization 3 × 31 × 1384697

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128776821
Product of the distinct prime numbers

The prime factorization of 128776821 is 3 × 31 × 1384697. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128776821)

Multiplication

n×y
n×2 257553642
n×3 386330463
n×4 515107284
n×5 643884105

Division

n÷y
n÷2 64388410.5
n÷3 42925607
n÷3 32194205.25
n÷5 25755364.2

Exponentiation

ny
n2 16583469626866041
n3 2.1355664996979E+24
n4 2.7501146486519E+32
n5 3.5415102183892E+40

Nth Root

y√n
2√n 11347.987530836
3√n 504.98587811374
4√n 106.52693335883
5√n 41.876226482552

Divisors of 128776821

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -128776820
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 128776821 can be divided by 8 positive divisors. The sum of these divisors (counting 128776821) is 1, the average is 0.125.

Base conversion 128776821

Base System Value
2 Binary 111101011001111101001110101
3 Ternary 22222022112120220
4 Quaternary 13223033221311
5 Quinary 230431324241
6 Senary 20440044553
8 Octal 753175165
10 Decimal 128776821
12 Duodecimal 37163759
16 Hexadecimal 7acfa75
20 Vigesimal 204h211
36 Base36 24o4tx

Cryptographic Hash Functions

md5 640e629a35546e2dd545d9664df19ef3
sha1 d114ad75d1000e504c231eca17d70f62da277e0a
sha256 79151df62f81a4ee5e8b0834b07a039ffe6758f52bb83b3dc06088d9b39ce17b
sha512 9447675d9deda2d0ba7d95848ebf5cd905bb844cb9f1fce9b0f4661ee43d3ab5d7b6930079b26fd85da64e20ea521162368f4779afebd43edfe30417621181ef
ripemd-160 d116ccb9c2cb4c231718e63cac34af1836a51ccd

128776821 as geometric shapes

Circle

Radius = n
Diameter 257553642
Circumference 809128629.6125
Area 5.2098506350792E+16

Sphere

Radius = n
Volume 8.9454400356044E+24
Surface area 2.0839402540317E+17
Circumference 809128629.6125

Square

Length = n
Perimeter 515107284
Area 16583469626866041
Diagonal 182117926.77749

Cube

Length = n
Surface area 99500817761196246
Volume 2.1355664996979E+24
Space diagonal 223047996.8092

Equilateral Triangle

Length = n
Perimeter 386330463
Area 7.1808529898768E+15
Altitude 111523998.4046

Triangular Pyramid

Length = n
Surface area 7.1808529898768E+15
Volume 2.5167892560186E+23
Height 60705975.592497