128702981 is an odd 9-digits composite number following 128702980
and preceding 128702982 . In scientific notation, it is written as 1.28702981 × 10^8.
The sum of its digits is 38. It has a total of 3 prime factors and 6 positive divisors.
There are 117002600 positive integers (up to 128702981) that are relatively prime to 128702981.
128702981 has 6 divisors, whose sum is 141467046
The reverse of 128702981 is 189207821
Previous prime number is 11
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 38
Digital Root 2
Name
one hundred twenty-eight million seven hundred two thousand nine hundred eighty-one
Scientific notation
1.28702981 × 10^8
Engineering notation
1.28702981 × 10^6
Prime Factorization
11 × 11 × 1063661
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
11700271
Product of the distinct prime numbers
The prime factorization of 128702981 is 11 × 11 × 1063661.
Since it has a total of 3 prime factors.
8 , 3 , 85 , 4 , 74 , 151 , 5807 , 5847 , 16023 , 22055 , 199328 , 657867 , 2947935 , 118596 , 28807705 , 90854954 , 287273870 , 348750060 , 925400254 , 2384288609
n×2
257405962
n×3
386108943
n×4
514811924
n×5
643514905
n÷2
64351490.5
n÷3
42900993.666667
n÷3
32175745.25
n÷5
25740596.2
n2
16564457318286361
n3
2.1318950355107E+24
n4
2.7438124624933E+32
n5
3.5313684322784E+40
2 √n
11344.733624021
3 √n
504.88934084828
4 √n
106.51165956843
5 √n
41.871423055987
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-128702980
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128702981 can be divided by 6 positive divisors.
The sum of these divisors (counting 128702981) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
111101010111101101000000101
3
Ternary
22222011210022002
4
Quaternary
13222331220011
5
Quinary
230421443411
6
Senary
20434315045
8
Octal
752755005
10
Decimal
128702981
12
Duodecimal
37128a85
16
Hexadecimal
7abda05
20
Vigesimal
2047h91
36
Base36
24mjut
md5
27524897c688374525ad6274f4ca8ba2
sha1
5c94f28f24d76e93bb586140f27e754210d2ecc3
sha256
84d019ada27119873ba4f7d08f5edc7b459b5baf7a28806cf21cf1aa48f9077d
sha512
151347d8bb31988ca6886e4a9e9afe9b80305a7d87f7e48aedcd72c42738bf66f01c2dac45ef46f7f3cc4aff7383a74d2cd9df408d12d7445e7cf1e97cba6c91
ripemd-160
cbbf331fa94cba69f931961760e416c9d45104a6
Diameter
257405962
Circumference
808664679.20941
Area
5.203877742183E+16
Volume
8.93006104238E+24
Surface area
2.0815510968732E+17
Circumference
808664679.20941
Perimeter
514811924
Area
16564457318286361
Diagonal
182013501.24805
Surface area
99386743909718166
Volume
2.1318950355107E+24
Space diagonal
222920102.17757
Perimeter
386108943
Area
7.1726204187695E+15
Altitude
111460051.08879
Surface area
7.1726204187695E+15
Volume
2.5124623939793E+23
Height
60671167.082682