128975985 (number)

128975985 is an odd 9-digits composite number following 128975984 and preceding 128975986. In scientific notation, it is written as 1.28975985 × 10^8. The sum of its digits is 54. It has a total of 3 prime factors and 8 positive divisors. There are 68486400 positive integers (up to 128975985) that are relatively prime to 128975985.

Interesting facts

Basic properties

Name

Name one hundred twenty-eight million nine hundred seventy-five thousand nine hundred eighty-five

Notation

Scientific notation 1.28975985 × 10^8
Engineering notation 1.28975985 × 10^6

Prime Factorization of 128975985

Prime Factorization 45 × 233 × 12301

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 128975985
Product of the distinct prime numbers

The prime factorization of 128975985 is 45 × 233 × 12301. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 128975985)

Multiplication

n×y
n×2 257951970
n×3 386927955
n×4 515903940
n×5 644879925

Division

n÷y
n÷2 64487992.5
n÷3 42991995
n÷3 32243996.25
n÷5 25795197

Exponentiation

ny
n2 16634804706720225
n3 2.1454903223319E+24
n4 2.7671672763072E+32
n5 3.5689812512149E+40

Nth Root

y√n
2√n 11356.759440967
3√n 505.24607815586
4√n 106.56809766983
5√n 41.889171486075

Divisors of 128975985

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 -128975984
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 128975985 can be divided by 8 positive divisors. The sum of these divisors (counting 128975985) is 1, the average is 0.125.

Base conversion 128975985

Base System Value
2 Binary 111101100000000010001110001
3 Ternary 22222200122210100
4 Quaternary 13230000101301
5 Quinary 231004212420
6 Senary 20444223013
8 Octal 754002161
10 Decimal 128975985
12 Duodecimal 3723aa69
16 Hexadecimal 7b00471
20 Vigesimal 2061jj5
36 Base36 24sei9

Cryptographic Hash Functions

md5 5625fc29d632be4fba2ae77d3bb9725f
sha1 080f60769ff61bfc8a7a7bdfb276ebbbe0afe859
sha256 e0c83902ed946b6bcfd2d10fcfde5b8ca5669be9ded7b72a3592e9a7df39828f
sha512 c08ea4c9482e5b44fbb1bd134b0dc767e3bd63e45670deb7e556305e96f286d4556b600ccea41af9d2376c6872152abc8fc9356b3f8ef6ec576755c92c6782cd
ripemd-160 a68e7c7e68befe2eb3745ec381c737868dd94c98

128975985 as geometric shapes

Circle

Radius = n
Diameter 257951970
Circumference 810380013.93101
Area 5.2259780260533E+16

Sphere

Radius = n
Volume 8.9870088466478E+24
Surface area 2.0903912104213E+17
Circumference 810380013.93101

Square

Length = n
Perimeter 515903940
Area 16634804706720225
Diagonal 182399587.20743

Cube

Length = n
Surface area 99808828240321350
Volume 2.1454903223319E+24
Space diagonal 223392958.97624

Equilateral Triangle

Length = n
Perimeter 386927955
Area 7.2030817315063E+15
Altitude 111696479.48812

Triangular Pyramid

Length = n
Surface area 7.2030817315063E+15
Volume 2.5284845931516E+23
Height 60799862.402476