128538381 is an odd 9-digits composite number following 128538380
and preceding 128538382 . In scientific notation, it is written as 1.28538381 × 10^8.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 85541040 positive integers (up to 128538381) that are relatively prime to 128538381.
128538381 has 8 divisors, whose sum is 171686944
The reverse of 128538381 is 183835821
Previous prime number is 571
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 39
Digital Root 3
Name
one hundred twenty-eight million five hundred thirty-eight thousand three hundred eighty-one
Scientific notation
1.28538381 × 10^8
Engineering notation
1.28538381 × 10^6
Prime Factorization
3 × 571 × 75037
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128538381
Product of the distinct prime numbers
The prime factorization of 128538381 is 3 × 571 × 75037.
Since it has a total of 3 prime factors.
10 , 8 , 78 , 40 , 176 , 320 , 6622 , 1200 , 513 , 71612 , 456156 , 542573 , 9269365 , 7413878 , 71134534 , 45576218 , 316906377 , 601833556 , 8619935479 , 9565873427
n×2
257076762
n×3
385615143
n×4
514153524
n×5
642691905
n÷2
64269190.5
n÷3
42846127
n÷3
32134595.25
n÷5
25707676.2
n2
16522115390101161
n3
2.1237259629388E+24
n4
2.7298029696382E+32
n5
3.5088445416628E+40
2 √n
11337.476835698
3 √n
504.67401240238
4 √n
106.47758841981
5 √n
41.860707585969
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
-128538380
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 128538381 can be divided by 8 positive divisors.
The sum of these divisors (counting 128538381) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101010010101011100001101
3
Ternary
22221212102111210
4
Quaternary
13222111130031
5
Quinary
230401212011
6
Senary
20431005033
8
Octal
752253415
10
Decimal
128538381
12
Duodecimal
37069779
16
Hexadecimal
7a9570d
20
Vigesimal
20375j1
36
Base36
24j0ul
md5
2b600fbfd159a8eab15db7c8fd9db70e
sha1
6f7bfb006ceb9e533c184f31fe778be273f978d5
sha256
4ab372ac66c92959e2bd03d0b7668383a88a6b2d00df555469bb9b42a43b0fd5
sha512
02c2dcf1d22700698127c79a362b6c010d0ae72b1ff74ac03b4ede9866e38f422cc093f58b9fb7bb1ac307c2fe9a5957b2fe56265951b6e72d0b9295cfc791e1
ripemd-160
fae05ef6c3121ef2ae3b1fbc04a61e00dc8cd04e
Diameter
257076762
Circumference
807630466.90785
Area
5.1905756331305E+16
Volume
8.8958425112085E+24
Surface area
2.0762302532522E+17
Circumference
807630466.90785
Perimeter
514153524
Area
16522115390101161
Diagonal
181780721.69568
Surface area
99132692340606966
Volume
2.1237259629388E+24
Space diagonal
222635006.61465
Perimeter
385615143
Area
7.1542858260427E+15
Altitude
111317503.30732
Surface area
7.1542858260427E+15
Volume
2.5028350496266E+23
Height
60593573.89856