128520281 is an odd 9-digits composite number following 128520280
and preceding 128520282 . In scientific notation, it is written as 1.28520281 × 10^8.
The sum of its digits is 29. It has a total of 3 prime factors and 8 positive divisors.
There are 123795360 positive integers (up to 128520281) that are relatively prime to 128520281.
128520281 has 8 divisors, whose sum is 133324800
The reverse of 128520281 is 182025821
Previous prime number is 79
Is Prime? no Number parity odd Number length 9 Sum of Digits 29 Digital Root 2
Name
one hundred twenty-eight million five hundred twenty thousand two hundred eighty-one
Scientific notation
1.28520281 × 10^8
Engineering notation
1.28520281 × 10^6
Prime Factorization
41 × 79 × 39679
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
128520281 Product of the distinct prime numbers
The prime factorization of 128520281 is 41 × 79 × 39679.
Since it has a total of 3 prime factors.
1 , 8 , 41 , 42 , 266 , 300 , 3897 , 7251 , 69259 , 96853 , 711318 , 570789 , 5207748 , 7700079 , 89279769 , 34783538 , 126726215 , 210062317 , 6451671480 , 8633559918
n×2
257040562
n×3
385560843
n×4
514081124
n×5
642601405
n÷2
64260140.5
n÷3
42840093.666667
n÷3
32130070.25
n÷5
25704056.2
n2
16517462628318961
n3
2.1228289383986E+24
n4
2.7282657167791E+32
n5
3.5063747656312E+40
2 √n11336.678570022
3 √n504.6503229063
4 √n106.47383983882
5 √n41.859528605058
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
-128520280 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 128520281 can be divided by 8 positive divisors.
The sum of these divisors (counting 128520281) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101010010001000001011001
3
Ternary
22221211111200102
4
Quaternary
13222101001121
5
Quinary
230400122111
6
Senary
20430345145
8
Octal
752210131
10
Decimal
128520281
12
Duodecimal
3705b1b5
16
Hexadecimal
7a91059
20
Vigesimal
20350e1
36
Base36
24imvt
md5
75496b0e837ed8a03faec25ae60747c0
sha1
e93b3d9e6750bad4dc76c802c8dc85fe6b89878a
sha256
b1f23a42ecac453d5fd649a35a0828a3ead932503cacc8dd0330d2c05d566bc1
sha512
a7cbceb2d3a4ceb2cc32e775291ec1ed7a8614e0c8ff8a284744f2b18774432374b533a66ebaba338d2322814dff6ae0ca644d6ac6f4d5d5816abdd62285bbe6
ripemd-160
69f4fffecb49d26ed73dae819bb13ce8b564779c
Diameter
257040562
Circumference
807516741.25379
Area
5.1891139249071E+16
Volume
8.8920850636009E+24
Surface area
2.0756455699628E+17
Circumference
807516741.25379
Perimeter
514081124
Area
16517462628318961
Diagonal
181755124.4302
Surface area
99104775769913766
Volume
2.1228289383986E+24
Space diagonal
222603656.49503
Perimeter
385560843
Area
7.1522711210922E+15
Altitude
111301828.24751
Surface area
7.1522711210922E+15
Volume
2.5017778960678E+23
Height
60585041.476734