128538561 is an odd 9-digits composite number following 128538560
and preceding 128538562 . In scientific notation, it is written as 1.28538561 × 10^8.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 83869040 positive integers (up to 128538561) that are relatively prime to 128538561.
128538561 has 8 divisors, whose sum is 175031424
The reverse of 128538561 is 165835821
Previous prime number is 47
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 five hundred sixty-one
Scientific notation
1.28538561 × 10^8
Engineering notation
1.28538561 × 10^6
Prime Factorization
3 × 47 × 911621
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128538561
Product of the distinct prime numbers
The prime factorization of 128538561 is 3 × 47 × 911621.
Since it has a total of 3 prime factors.
10 , 4 , 58 , 18 , 886 , 809 , 2491 , 1180 , 64527 , 23249 , 135668 , 443342 , 4338619 , 7734662 , 79984042 , 41010888 , 295922695 , 276735192 , 9787366004 , 4946022858
n×2
257077122
n×3
385615683
n×4
514154244
n×5
642692805
n÷2
64269280.5
n÷3
42846187
n÷3
32134640.25
n÷5
25707712.2
n2
16522161663950721
n3
2.1237348848936E+24
n4
2.7298182604972E+32
n5
3.5088691099584E+40
2 √n
11337.48477397
3 √n
504.67424797736
4 √n
106.47762569653
5 √n
41.860719309974
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
-128538560
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 128538561 can be divided by 8 positive divisors.
The sum of these divisors (counting 128538561) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101010010101011111000001
3
Ternary
22221212102202110
4
Quaternary
13222111133001
5
Quinary
230401213221
6
Senary
20431005533
8
Octal
752253701
10
Decimal
128538561
12
Duodecimal
370698a9
16
Hexadecimal
7a957c1
20
Vigesimal
2037681
36
Base36
24j0zl
md5
2ef594d8e389755ab0ba1f3101875368
sha1
a216be7ff88ba29e49be7040425d3c7de6e44e02
sha256
8391784ca9f4f17c2359dbd56e7243221449706a328ab4e4f418cc103db2f4d8
sha512
407618d426086603ce5ac53dcbc3de0bab26bdc6198f98b279834b3927418e0964ab28b998f02c7cb53971110abadb244fc95ee76f390f4205b0f05eb1e18d99
ripemd-160
8a7a8933b9456092a47e3c73060074c5174f6963
Diameter
257077122
Circumference
807631597.88121
Area
5.190590170489E+16
Volume
8.8958798834054E+24
Surface area
2.0762360681956E+17
Circumference
807631597.88121
Perimeter
514154244
Area
16522161663950721
Diagonal
181780976.25412
Surface area
99132969983704326
Volume
2.1237348848936E+24
Space diagonal
222635318.38379
Perimeter
385615683
Area
7.1543058632073E+15
Altitude
111317659.1919
Surface area
7.1543058632073E+15
Volume
2.5028455642512E+23
Height
60593658.751374