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.
128975985 has 8 divisors, whose sum is 132418728
The reverse of 128975985 is 589579821
Previous prime number is 233
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 54
Digital Root 9
Name
one hundred twenty-eight million nine hundred seventy-five thousand nine hundred eighty-five
Scientific notation
1.28975985 × 10^8
Engineering notation
1.28975985 × 10^6
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.
10 , 6 , 42 , 94 , 780 , 328 , 9035 , 2183 , 22629 , 84145 , 213740 , 405979 , 3552534 , 4237659 , 36226421 , 65286452 , 647621695 , 407940384 , 7376406812 , 6078735950
n×2
257951970
n×3
386927955
n×4
515903940
n×5
644879925
n÷2
64487992.5
n÷3
42991995
n÷3
32243996.25
n÷5
25795197
n2
16634804706720225
n3
2.1454903223319E+24
n4
2.7671672763072E+32
n5
3.5689812512149E+40
2 √n
11356.759440967
3 √n
505.24607815586
4 √n
106.56809766983
5 √n
41.889171486075
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
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
md5
5625fc29d632be4fba2ae77d3bb9725f
sha1
080f60769ff61bfc8a7a7bdfb276ebbbe0afe859
sha256
e0c83902ed946b6bcfd2d10fcfde5b8ca5669be9ded7b72a3592e9a7df39828f
sha512
c08ea4c9482e5b44fbb1bd134b0dc767e3bd63e45670deb7e556305e96f286d4556b600ccea41af9d2376c6872152abc8fc9356b3f8ef6ec576755c92c6782cd
ripemd-160
a68e7c7e68befe2eb3745ec381c737868dd94c98
Diameter
257951970
Circumference
810380013.93101
Area
5.2259780260533E+16
Volume
8.9870088466478E+24
Surface area
2.0903912104213E+17
Circumference
810380013.93101
Perimeter
515903940
Area
16634804706720225
Diagonal
182399587.20743
Surface area
99808828240321350
Volume
2.1454903223319E+24
Space diagonal
223392958.97624
Perimeter
386927955
Area
7.2030817315063E+15
Altitude
111696479.48812
Surface area
7.2030817315063E+15
Volume
2.5284845931516E+23
Height
60799862.402476