128538281 is an odd 9-digits composite number following 128538280
and preceding 128538282 . In scientific notation, it is written as 1.28538281 × 10^8.
The sum of its digits is 38. It has a total of 2 prime factors and 4 positive divisors.
There are 128063700 positive integers (up to 128538281) that are relatively prime to 128538281.
128538281 has 4 divisors, whose sum is 129012864
The reverse of 128538281 is 182835821
Previous prime number is 271
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 38
Digital Root 2
Name
one hundred twenty-eight million five hundred thirty-eight thousand two hundred eighty-one
Scientific notation
1.28538281 × 10^8
Engineering notation
1.28538281 × 10^6
Prime Factorization
271 × 474311
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
128538281
Product of the distinct prime numbers
The prime factorization of 128538281 is 271 × 474311.
Since it has a total of 2 prime factors.
9 , 3 , 59 , 79 , 507 , 642 , 8871 , 2357 , 69839 , 25022 , 293290 , 639233 , 4405299 , 3440767 , 77525493 , 78138726 , 548573436 , 403756195 , 470296367 , 2862379296
n×2
257076562
n×3
385614843
n×4
514153124
n×5
642691405
n÷2
64269140.5
n÷3
42846093.666667
n÷3
32134570.25
n÷5
25707656.2
n2
16522089682434961
n3
2.123721006308E+24
n4
2.7297944747442E+32
n5
3.5088308926692E+40
2 √n
11337.472425545
3 √n
504.6738815273
4 √n
106.47756771051
5 √n
41.860701072627
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
-128538280
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 128538281 can be divided by 4 positive divisors.
The sum of these divisors (counting 128538281) is 1, the average is 0.25.
Base
System
Value
2
Binary
111101010010101011010101001
3
Ternary
22221212102101002
4
Quaternary
13222111122221
5
Quinary
230401211111
6
Senary
20431004345
8
Octal
752253251
10
Decimal
128538281
12
Duodecimal
370696b5
16
Hexadecimal
7a956a9
20
Vigesimal
20375e1
36
Base36
24j0rt
md5
97f2f89a54f207039cdce539d27e3925
sha1
7771be7b3e8b359887202c3ae693cc12cb2258e5
sha256
8572ee0a9647e84df900c8a1a79d1a5527f5696c609ed71af9838e8b165ac859
sha512
4296d93cae9d284c2826cabcbe6cad60997472659d77ba6d328cde3e7bee7f45a9703d7e7ce65b64d7ea77121dad34b3c40284dddc29030ca7c9ebc0e1d7e4dc
ripemd-160
2dad3daffd4fcb1072d436a107e0bb5ccd609b06
Diameter
257076562
Circumference
807629838.58932
Area
5.1905675568289E+16
Volume
8.8958217489222E+24
Surface area
2.0762270227316E+17
Circumference
807629838.58932
Perimeter
514153124
Area
16522089682434961
Diagonal
181780580.27432
Surface area
99132538094609766
Volume
2.123721006308E+24
Space diagonal
222634833.40957
Perimeter
385614843
Area
7.1542746942967E+15
Altitude
111317416.70478
Surface area
7.1542746942967E+15
Volume
2.5028292081812E+23
Height
60593526.758108