128972457 is an odd 9-digits composite number following 128972456
and preceding 128972458 . In scientific notation, it is written as 1.28972457 × 10^8.
The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors.
There are 85908888 positive integers (up to 128972457) that are relatively prime to 128972457.
128972457 has 8 divisors, whose sum is 143424000
The reverse of 128972457 is 754279821
Previous prime number is 1327
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 45
Digital Root 9
Name
one hundred twenty-eight million nine hundred seventy-two thousand four hundred fifty-seven
Scientific notation
1.28972457 × 10^8
Engineering notation
1.28972457 × 10^6
Prime Factorization
9 × 1327 × 10799
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128972457
Product of the distinct prime numbers
The prime factorization of 128972457 is 9 × 1327 × 10799.
Since it has a total of 3 prime factors.
3 , 6 , 62 , 79 , 387 , 572 , 1200 , 2093 , 3998 , 69890 , 105919 , 981135 , 4953514 , 9420601 , 7340730 , 21189416 , 365488276 , 707224867 , 3579129024 , 8825573086
n×2
257944914
n×3
386917371
n×4
515889828
n×5
644862285
n÷2
64486228.5
n÷3
42990819
n÷3
32243114.25
n÷5
25794491.4
n2
16633894664616849
n3
2.1453142643748E+24
n4
2.7668645171357E+32
n5
3.5684931496111E+40
2 √n
11356.604113907
3 √n
505.24147129199
4 √n
106.5673688983
5 √n
41.888942316879
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
-128972456
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 128972457 can be divided by 8 positive divisors.
The sum of these divisors (counting 128972457) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101011111111011010101001
3
Ternary
22222200110221200
4
Quaternary
13223333122221
5
Quinary
231004104312
6
Senary
20444154413
8
Octal
753773251
10
Decimal
128972457
12
Duodecimal
37238a09
16
Hexadecimal
7aff6a9
20
Vigesimal
2061b2h
36
Base36
24sbs9
md5
890c2e1303e7885fbb0795c10a39eba1
sha1
a04125f8418ea018898bd1855c5b0b73e121cd77
sha256
c189eb7044e87d159e4174ede48531b3b4192803240ed581011465c0b312e30d
sha512
7687ef8277d81c0c8df39184138789baf59e6951b08b3864a030968866ac86aa903eeb4148ada03026ef4bded33bff82d3b60816a1de5ab63bedc6ba8a9f3daa
ripemd-160
ebfdc4d1d1ed55a161980a313fe230c5960f7fef
Diameter
257944914
Circumference
810357846.85325
Area
5.2256921278947E+16
Volume
8.9862713768018E+24
Surface area
2.0902768511579E+17
Circumference
810357846.85325
Perimeter
515889828
Area
16633894664616849
Diagonal
182394597.86198
Surface area
99803367987701094
Volume
2.1453142643748E+24
Space diagonal
223386848.30099
Perimeter
386917371
Area
7.2026876717163E+15
Altitude
111693424.1505
Surface area
7.2026876717163E+15
Volume
2.5282771068594E+23
Height
60798199.287327