128993908 is an even 9-digits composite number following 128993907
and preceding 128993909 . In scientific notation, it is written as 1.28993908 × 10^8.
The sum of its digits is 49. It has a total of 4 prime factors and 12 positive divisors.
There are 64457720 positive integers (up to 128993908) that are relatively prime to 128993908.
128993908 has 12 divisors, whose sum is 225876672
The reverse of 128993908 is 809399821
Previous prime number is 17807
Is Prime? no
Number parity even
Number length 9
Sum of Digits 49
Digital Root 4
Name
one hundred twenty-eight million nine hundred ninety-three thousand nine hundred eight
Scientific notation
1.28993908 × 10^8
Engineering notation
1.28993908 × 10^6
Prime Factorization
2 × 2 × 17807 × 1811
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
64496954
Product of the distinct prime numbers
The prime factorization of 128993908 is 2 × 2 × 17807 × 1811.
Since it has a total of 4 prime factors.
2 , 3 , 73 , 30 , 630 , 519 , 40 , 9904 , 43257 , 55299 , 432126 , 114563 , 2381261 , 5503214 , 31135763 , 8021974 , 559095079 , 865177719 , 9708583269 , 7640244365
n×2
257987816
n×3
386981724
n×4
515975632
n×5
644969540
n÷2
64496954
n÷3
42997969.333333
n÷3
32248477
n÷5
25798781.6
n2
16639428301112464
n3
2.1463848834463E+24
n4
2.7687057418786E+32
n5
3.5714617374696E+40
2 √n
11357.548503088
3 √n
505.26948071933
4 √n
106.57179975532
5 √n
41.890335637512
1 , 2 , 4 , 1811 , 3622 , 7244 , 17807 , 35614 , 71228 , 32248477 , 64496954 , 128993908
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-128993907
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128993908 can be divided by 12 positive divisors.
The sum of these divisors (counting 128993908) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
111101100000100101001110100
3
Ternary
22222201120101011
4
Quaternary
13230010221310
5
Quinary
231010301113
6
Senary
20444442004
8
Octal
754045164
10
Decimal
128993908
12
Duodecimal
37249304
16
Hexadecimal
7b04a74
20
Vigesimal
20644f8
36
Base36
24ssc4
md5
25a43fa5b4fcf734836cd99091705015
sha1
dd6cf2a3a18f578e841cfc0b249c1e19cb8e1141
sha256
bd1654c81ff745e60116ecdc54b263e2fb488781581a7d5b1d09ca43988e1a68
sha512
e00f5ab659bedcfa093bbeaa1c23378662de9915bc3ff8a620d53ea9a66975fdfb22ef49e4b9c182e787102262bf6cb67dfb7f919cc526c12f3a097730476028
ripemd-160
11ad7b382a451e29447d83fac3830974bcc0a340
Diameter
257987816
Circumference
810492627.46128
Area
5.2274305710709E+16
Volume
8.9907559754814E+24
Surface area
2.0909722284284E+17
Circumference
810492627.46128
Perimeter
515975632
Area
16639428301112464
Diagonal
182424934.15711
Surface area
99836569806674784
Volume
2.1463848834463E+24
Space diagonal
223424002.52287
Perimeter
386981724
Area
7.2050838066066E+15
Altitude
111712001.26143
Surface area
7.2050838066066E+15
Volume
2.5295388435353E+23
Height
60808311.385702