128840385 is an odd 9-digits composite number following 128840384
and preceding 128840386 . In scientific notation, it is written as 1.28840385 × 10^8.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 68714864 positive integers (up to 128840385) that are relatively prime to 128840385.
128840385 has 8 divisors, whose sum is 206144640
The reverse of 128840385 is 583048821
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 39
Digital Root 3
Name
one hundred twenty-eight million eight hundred forty thousand three hundred eighty-five
Scientific notation
1.28840385 × 10^8
Engineering notation
1.28840385 × 10^6
Prime Factorization
3 × 5 × 8589359
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128840385
Product of the distinct prime numbers
The prime factorization of 128840385 is 3 × 5 × 8589359.
Since it has a total of 3 prime factors.
5 , 8 , 67 , 2 , 205 , 130 , 6052 , 5386 , 25890 , 29058 , 171920 , 272541 , 1412301 , 9232866 , 62454269 , 59476439 , 23080577 , 88821740 , 7716529203 , 1517149477
n×2
257680770
n×3
386521155
n×4
515361540
n×5
644201925
n÷2
64420192.5
n÷3
42946795
n÷3
32210096.25
n÷5
25768077
n2
16599844806948225
n3
2.1387303958675E+24
n4
2.7555484761477E+32
n5
3.5502592655303E+40
2 √n
11350.787858118
3 √n
505.06895114462
4 √n
106.54007630051
5 √n
41.880359672124
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
-128840384
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 128840385 can be divided by 8 positive divisors.
The sum of these divisors (counting 128840385) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101011011111001011000001
3
Ternary
22222102202210010
4
Quaternary
13223133023001
5
Quinary
230440343020
6
Senary
20441255133
8
Octal
753371301
10
Decimal
128840385
12
Duodecimal
371944a9
16
Hexadecimal
7adf2c1
20
Vigesimal
20550j5
36
Base36
24phvl
md5
7fc56b9bf67321da0192cacad7895f58
sha1
216039fd654f04497253a87dbfb4423e89d891eb
sha256
5bc3dfa654ed8e415bc7325154eef7c8cc69694063c9b809a7a8cf613e108a47
sha512
42e6b2c3d00978ac487f75706eaab87f371582296f14d257b4ee7fd6276bdc33035f99d45744433489fd9b43c04ecfcf4d64a2021ecfd92fefc50a858b65bfe2
ripemd-160
52251624fdb12d1d270f2458cb4031a66fa87ce5
Diameter
257680770
Circumference
809528014.00336
Area
5.2149950496239E+16
Volume
8.9586929328885E+24
Surface area
2.0859980198496E+17
Circumference
809528014.00336
Perimeter
515361540
Area
16599844806948225
Diagonal
182207819.84837
Surface area
99599068841689350
Volume
2.1387303958675E+24
Space diagonal
223158092.88674
Perimeter
386521155
Area
7.1879436508482E+15
Altitude
111579046.44337
Surface area
7.1879436508482E+15
Volume
2.5205179434128E+23
Height
60735939.949457