128538805 is an odd 9-digits composite number following 128538804
and preceding 128538806 . In scientific notation, it is written as 1.28538805 × 10^8.
The sum of its digits is 40. It has a total of 2 prime factors and 4 positive divisors.
There are 102831040 positive integers (up to 128538805) that are relatively prime to 128538805.
128538805 has 4 divisors, whose sum is 154246572
The reverse of 128538805 is 508835821
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 40
Digital Root 4
Name
one hundred twenty-eight million five hundred thirty-eight thousand eight hundred five
Scientific notation
1.28538805 × 10^8
Engineering notation
1.28538805 × 10^6
Prime Factorization
5 × 25707761
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
128538805
Product of the distinct prime numbers
The prime factorization of 128538805 is 5 × 25707761.
Since it has a total of 2 prime factors.
1 , 3 , 72 , 65 , 726 , 268 , 1458 , 5878 , 75634 , 24965 , 260583 , 670691 , 8247694 , 7129695 , 1544535 , 1352076 , 23461287 , 600201282 , 1461057646 , 8268551203
n×2
257077610
n×3
385616415
n×4
514155220
n×5
642694025
n÷2
64269402.5
n÷3
42846268.333333
n÷3
32134701.25
n÷5
25707761
n2
16522224390828025
n3
2.1237469791389E+24
n4
2.7298389882087E+32
n5
3.5089024138676E+40
2 √n
11337.495534729
3 √n
504.67456731199
4 √n
106.47767622713
5 √n
41.860735202493
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-128538804
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128538805 can be divided by 4 positive divisors.
The sum of these divisors (counting 128538805) is 1, the average is 0.25.
Base
System
Value
2
Binary
111101010010101100010110101
3
Ternary
22221212110002111
4
Quaternary
13222111202311
5
Quinary
230401220210
6
Senary
20431011021
8
Octal
752254265
10
Decimal
128538805
12
Duodecimal
37069a71
16
Hexadecimal
7a958b5
20
Vigesimal
2037705
36
Base36
24j16d
md5
a1bc84ddb06d026433a69000dece0b9e
sha1
f40390a7c052d21f125e7a322c1556d34e3778c5
sha256
252e0a15015c80d444282f90c2f99068245861adc67d5498506ac2d7e2b46814
sha512
802050e650f44663be772cf5a443380bad754efc1a2080e260137028de985b213151570626529ed76153dcd1a3e5cfa4866889b2695a13b8b7356450288c59d1
ripemd-160
0d25df3245409521b0dfc206deedfc538d738463
Diameter
257077610
Circumference
807633130.97842
Area
5.1906098767187E+16
Volume
8.8959305436617E+24
Surface area
2.0762439506875E+17
Circumference
807633130.97842
Perimeter
514155220
Area
16522224390828025
Diagonal
181781321.32223
Surface area
99133346344968150
Volume
2.1237469791389E+24
Space diagonal
222635741.00419
Perimeter
385616415
Area
7.154333024742E+15
Altitude
111317870.50209
Surface area
7.154333024742E+15
Volume
2.5028598174559E+23
Height
60593773.774077