128021225 is an odd 9-digits composite number following 128021224
and preceding 128021226 . In scientific notation, it is written as 1.28021225 × 10^8.
The sum of its digits is 23. It has a total of 5 prime factors and 18 positive divisors.
There are 98869120 positive integers (up to 128021225) that are relatively prime to 128021225.
128021225 has 18 divisors, whose sum is 164436090
The reverse of 128021225 is 522120821
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 23
Digital Root 5
Name
one hundred twenty-eight million twenty-one thousand two hundred twenty-five
Scientific notation
1.28021225 × 10^8
Engineering notation
1.28021225 × 10^6
Prime Factorization
5 × 5 × 29 × 29 × 6089
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
5
Total number of prime factors
rad
Radical
882905
Product of the distinct prime numbers
The prime factorization of 128021225 is 5 × 5 × 29 × 29 × 6089.
Since it has a total of 5 prime factors.
3 , 6 , 38 , 23 , 973 , 1000 , 175 , 3358 , 78769 , 73485 , 868863 , 981407 , 3245035 , 9904930 , 92583478 , 72205229 , 401614497 , 655114063 , 1119145571 , 9434049063
n×2
256042450
n×3
384063675
n×4
512084900
n×5
640106125
n÷2
64010612.5
n÷3
42673741.666667
n÷3
32005306.25
n÷5
25604245
n2
16389434050500625
n3
2.0981954242018E+24
n4
2.6861354849571E+32
n5
3.4388235530018E+40
2 √n
11314.646481442
3 √n
503.99627448535
4 √n
106.37032707218
5 √n
41.826969117875
1 , 5 , 25 , 29 , 145 , 725 , 841 , 4205 , 6089 , 21025 , 30445 , 152225 , 176581 , 882905 , 4414525 , 5120849 , 25604245 , 128021225
18 divisors
τ
Total Divisors
18
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-128021224
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.055555555555556
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
18
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128021225 can be divided by 18 positive divisors.
The sum of these divisors (counting 128021225) is 1, the average is 0.055555555555556.
Base
System
Value
2
Binary
111101000010111001011101001
3
Ternary
22220220011002212
4
Quaternary
13220113023221
5
Quinary
230233134400
6
Senary
20411534505
8
Octal
750271351
10
Decimal
128021225
12
Duodecimal
36a5a435
16
Hexadecimal
7a172e9
20
Vigesimal
2002d15
36
Base36
247xt5
md5
2708bd87b1062ab24205db2f662d0269
sha1
22fc2e578a10088ae5dfaa79f0d1d9b41dd69104
sha256
3fab5f0fd1eba85fffcf2d2aa94c655ab2e74d32a5422cd07c7610dee5e8e8f6
sha512
1aa567e4f19ccc612e8f235ac2e9fafde98dde51fa0e2064bfe50503ea603a5ad735f00a83795a715d48611a2a383366fea105cd3b06912af7f0ca92c2fef0b9
ripemd-160
82d648dfd7038f4af7f29f8ed83e5df11cb0da79
Diameter
256042450
Circumference
804381079.92713
Area
5.1488925609547E+16
Volume
8.7889004406241E+24
Surface area
2.0595570243819E+17
Circumference
804381079.92713
Perimeter
512084900
Area
16389434050500625
Diagonal
181049352.66662
Surface area
98336604303003750
Volume
2.0981954242018E+24
Space diagonal
221739266.14721
Perimeter
384063675
Area
7.0968331206916E+15
Altitude
110869633.0736
Surface area
7.0968331206916E+15
Volume
2.4727470211795E+23
Height
60349784.222206