128972456 is an even 9-digits composite number following 128972455
and preceding 128972457 . In scientific notation, it is written as 1.28972456 × 10^8.
The sum of its digits is 44. It has a total of 6 prime factors and 32 positive divisors.
There are 60935616 positive integers (up to 128972456) that are relatively prime to 128972456.
128972456 has 32 divisors, whose sum is 255204000
The reverse of 128972456 is 654279821
Previous prime number is 509
Is Prime? no Number parity even Number length 9 Sum of Digits 44 Digital Root 8
Name
one hundred twenty-eight million nine hundred seventy-two thousand four hundred fifty-six
Scientific notation
1.28972456 × 10^8
Engineering notation
1.28972456 × 10^6
Prime Factorization
2 × 2 × 2 × 19 × 509 × 1667
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
6 Total number of prime factors
rad Radical
32243114 Product of the distinct prime numbers
The prime factorization of 128972456 is 2 × 2 × 2 × 19 × 509 × 1667.
Since it has a total of 6 prime factors.
9 , 8 , 69 , 65 , 189 , 752 , 7192 , 3116 , 89934 , 73426 , 86831 , 478809 , 3153790 , 7209169 , 1307068 , 47556251 , 750107097 , 626639840 , 6414179132 , 1854213887
n×2
257944912
n×3
386917368
n×4
515889824
n×5
644862280
n÷2
64486228
n÷3
42990818.666667
n÷3
32243114
n÷5
25794491.2
n2
16633894406671936
n3
2.1453142144731E+24
n4
2.7668644313231E+32
n5
3.5684930112679E+40
2 √n11356.604069879
3 √n505.24146998617
4 √n106.56736869173
5 √n41.888942251921
1 , 2 , 4 , 8 , 19 , 38 , 76 , 152 , 509 , 1018 , 1667 , 2036 , 3334 , 4072 , 6668 , 9671 , 13336 , 19342 , 31673 , 38684 , 63346 , 77368 , 126692 , 253384 , 848503 , 1697006 , 3394012 , 6788024 , 16121557 , 32243114 , 64486228 , 128972456
32 divisors
τ Total Divisors
32 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-128972455 Sum of the proper positive divisors of n
A Arithmetic Mean
0.03125 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
32 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128972456 can be divided by 32 positive divisors.
The sum of these divisors (counting 128972456) is 1, the average is 0.03125.
Base
System
Value
2
Binary
111101011111111011010101000
3
Ternary
22222200110221122
4
Quaternary
13223333122220
5
Quinary
231004104311
6
Senary
20444154412
8
Octal
753773250
10
Decimal
128972456
12
Duodecimal
37238a08
16
Hexadecimal
7aff6a8
20
Vigesimal
2061b2g
36
Base36
24sbs8
md5
de9ea06c2ec2142fec9dc595589656fe
sha1
fd81ce3e2db78b81740ad1e2930419d12e5c23ef
sha256
c4faf79792499369e8cd202ad364ef51361e8e0308bb6f05c633e2a60ee0f88a
sha512
69c667056d828c842db8abf2687f026373794e014df0f81ff44ba753c2802ff1d6cfda4804eecd7a0f6642597f5ea3641d9e03d6bd80360d99d83454725d2fd5
ripemd-160
35cd2f40c00d8b83f5020c5c3ae12fdb988b2561
Diameter
257944912
Circumference
810357840.57007
Area
5.2256920468589E+16
Volume
8.9862711677741E+24
Surface area
2.0902768187436E+17
Circumference
810357840.57007
Perimeter
515889824
Area
16633894406671936
Diagonal
182394596.44777
Surface area
99803366440031616
Volume
2.1453142144731E+24
Space diagonal
223386846.56894
Perimeter
386917368
Area
7.2026875600229E+15
Altitude
111693423.28447
Surface area
7.2026875600229E+15
Volume
2.5282770480498E+23
Height
60798198.815922