128875 is an odd 6-digits composite number following 128874
and preceding 128876 . In scientific notation, it is written as 1.28875 × 10^5.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 103000 positive integers (up to 128875) that are relatively prime to 128875.
128875 has 4 divisors, whose sum is 130032
The reverse of 128875 is 578821
Previous prime number is 125
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 31
Digital Root 4
Name
one hundred twenty-eight thousand eight hundred seventy-five
Scientific notation
1.28875 × 10^5
Engineering notation
1.28875 × 10^3
Prime Factorization
125 × 1031
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
128875
Product of the distinct prime numbers
The prime factorization of 128875 is 125 × 1031.
Since it has a total of 2 prime factors.
5 , 5 , 44 , 28 , 215 , 534 , 2999 , 9103 , 75812 , 24372 , 849711 , 683680 , 7444778 , 4059280 , 90995053 , 32475632 , 468773536 , 455230614 , 9280670787 , 927691238
n×2
257750
n×3
386625
n×4
515500
n×5
644375
n÷2
64437.5
n÷3
42958.333333333
n÷3
32218.75
n÷5
25775
n2
16608765625
n3
2140454669921875
n4
2.7585109558618E+20
n5
3.5550309943669E+25
2 √n
358.99164335678
3 √n
50.511417867243
4 √n
18.947074796833
5 √n
10.520435925791
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-128874
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128875 can be divided by 4 positive divisors.
The sum of these divisors (counting 128875) is 1, the average is 0.25.
Base
System
Value
2
Binary
11111011101101011
3
Ternary
20112210011
4
Quaternary
133131223
5
Quinary
13111000
6
Senary
2432351
8
Octal
373553
10
Decimal
128875
12
Duodecimal
626b7
16
Hexadecimal
1f76b
20
Vigesimal
g23f
36
Base36
2rfv
md5
0bad88f8faf04c2aac9abb9bab5d406b
sha1
02a1dcf815ca8ca04bf20305d7cb58a40faccaab
sha256
f78939104041027ad3b0121f4207fa638f90b77892179b6982fa1b457cbe8437
sha512
824fb86317e4933cab334d97fd4c4ee21af8702bebf5cebbc7aedf6b540cd6a4ea941d94648db74caf4240da3377a0c65387f2cf857be0d218e65335f2a225c4
ripemd-160
fcd0423940e9dc8b08f524e20a32638b86143cda
Diameter
257750
Circumference
809745.50646277
Area
52177976072.695
Volume
8.965915555158E+15
Surface area
208711904290.78
Circumference
809745.50646277
Perimeter
515500
Area
16608765625
Diagonal
182256.77285083
Surface area
99652593750
Volume
2140454669921875
Space diagonal
223218.04782544
Perimeter
386625
Area
7191806478.3759
Altitude
111609.02391272
Surface area
7191806478.3759
Volume
2.5225500198736E+14
Height
60752.257616944