128538181 is an odd 9-digits composite number following 128538180
and preceding 128538182 . In scientific notation, it is written as 1.28538181 × 10^8.
The sum of its digits is 37. It has a total of 2 prime factors and 4 positive divisors.
There are 126777312 positive integers (up to 128538181) that are relatively prime to 128538181.
128538181 has 4 divisors, whose sum is 130299052
The reverse of 128538181 is 181835821
Previous prime number is 73
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 37
Digital Root 1
Name
one hundred twenty-eight million five hundred thirty-eight thousand one hundred eighty-one
Scientific notation
1.28538181 × 10^8
Engineering notation
1.28538181 × 10^6
Prime Factorization
73 × 1760797
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
128538181
Product of the distinct prime numbers
The prime factorization of 128538181 is 73 × 1760797.
Since it has a total of 2 prime factors.
5 , 1 , 77 , 29 , 825 , 814 , 2035 , 3648 , 65931 , 8204 , 952177 , 662775 , 287221 , 1799160 , 70778202 , 70568331 , 741178201 , 459190488 , 2199598439 , 4083739771
n×2
257076362
n×3
385614543
n×4
514152724
n×5
642690905
n÷2
64269090.5
n÷3
42846060.333333
n÷3
32134545.25
n÷5
25707636.2
n2
16522063974788761
n3
2.123716049685E+24
n4
2.7297859798701E+32
n5
3.5088172437181E+40
2 √n
11337.46801539
3 √n
504.67375065215
4 √n
106.47754700119
5 √n
41.860694559281
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
-128538180
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 128538181 can be divided by 4 positive divisors.
The sum of these divisors (counting 128538181) is 1, the average is 0.25.
Base
System
Value
2
Binary
111101010010101011001000101
3
Ternary
22221212102020101
4
Quaternary
13222111121011
5
Quinary
230401210211
6
Senary
20431004101
8
Octal
752253105
10
Decimal
128538181
12
Duodecimal
37069631
16
Hexadecimal
7a95645
20
Vigesimal
2037591
36
Base36
24j0p1
md5
18d381b07f3818ad190a0bf8ac4b3818
sha1
ac837bf5fab13e9570023442498cc08aa4a074e4
sha256
6a110af073d3cf3bff4dacc42eba5705b69643b347a33b8876cb2ea931b528ad
sha512
f62a616df8157f4b4d3e2e5860d289cca84ca49559028157660c8c8d640dd071c20513ae7a0e30dee8969447b3e366d969cc2c242d65aa703e36218e44c8ab0b
ripemd-160
65f632b10bd950fd6c480f0d2df799cc3708f468
Diameter
257076362
Circumference
807629210.27079
Area
5.1905594805337E+16
Volume
8.8958009866681E+24
Surface area
2.0762237922135E+17
Circumference
807629210.27079
Perimeter
514152724
Area
16522063974788761
Diagonal
181780438.85297
Surface area
99132383848732566
Volume
2.123716049685E+24
Space diagonal
222634660.20448
Perimeter
385614543
Area
7.1542635625594E+15
Altitude
111317330.10224
Surface area
7.1542635625594E+15
Volume
2.5028233667449E+23
Height
60593479.617656