128512421 is an odd 9-digits composite number following 128512420
and preceding 128512422 . In scientific notation, it is written as 1.28512421 × 10^8.
The sum of its digits is 26. It has a total of 3 prime factors and 8 positive divisors.
There are 126091440 positive integers (up to 128512421) that are relatively prime to 128512421.
128512421 has 8 divisors, whose sum is 130944000
The reverse of 128512421 is 124215821
Previous prime number is 61
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 26
Digital Root 8
Name
one hundred twenty-eight million five hundred twelve thousand four hundred twenty-one
Scientific notation
1.28512421 × 10^8
Engineering notation
1.28512421 × 10^6
Prime Factorization
439 × 61 × 4799
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128512421
Product of the distinct prime numbers
The prime factorization of 128512421 is 439 × 61 × 4799.
Since it has a total of 3 prime factors.
8 , 6 , 79 , 66 , 916 , 604 , 3358 , 4598 , 53218 , 95994 , 416130 , 771644 , 6903717 , 5034948 , 30039412 , 9974845 , 190571236 , 888557930 , 1027910814 , 7594501540
n×2
257024842
n×3
385537263
n×4
514049684
n×5
642562105
n÷2
64256210.5
n÷3
42837473.666667
n÷3
32128105.25
n÷5
25702484.2
n2
16515442351281241
n3
2.1224394804491E+24
n4
2.7275983605849E+32
n5
3.505302688344E+40
2 √n
11336.331902339
3 √n
504.64003495182
4 √n
106.47221187868
5 √n
41.859016586346
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
-128512420
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 128512421 can be divided by 8 positive divisors.
The sum of these divisors (counting 128512421) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101010001111000110100101
3
Ternary
22221211002220022
4
Quaternary
13222033012211
5
Quinary
230344344141
6
Senary
20430244525
8
Octal
752170645
10
Decimal
128512421
12
Duodecimal
37056745
16
Hexadecimal
7a8f1a5
20
Vigesimal
2034111
36
Base36
24igth
md5
630c06e60b85ae7aceac89eb41195180
sha1
408f3c397caf9eed68f5dd9d066d4103ca004444
sha256
ff705bc6a5153a6da4bc7a1a7e882392160d6499594dc0c8957366b86154898c
sha512
761f6d13e9f86f78a340a12b3c823b2ab3262ac6a5e126c5ffa39c0e0d88fbdb6f7b9926ea31203cfed84b151319d7fce59a871540f80855bf303b7527ad0bcc
ripemd-160
18939988ca77292960f0208a826c6a4d9330a3e5
Diameter
257024842
Circumference
807467355.41728
Area
5.1884792361571E+16
Volume
8.890453705957E+24
Surface area
2.0753916944628E+17
Circumference
807467355.41728
Perimeter
514049684
Area
16515442351281241
Diagonal
181744008.7116
Surface area
99092654107687446
Volume
2.1224394804491E+24
Space diagonal
222590042.57568
Perimeter
385537263
Area
7.1513963154735E+15
Altitude
111295021.28784
Surface area
7.1513963154735E+15
Volume
2.5013189154727E+23
Height
60581336.2372