128972644 is an even 9-digits composite number following 128972643
and preceding 128972645 . In scientific notation, it is written as 1.28972644 × 10^8.
The sum of its digits is 43. It has a total of 4 prime factors and 12 positive divisors.
There are 63993800 positive integers (up to 128972644) that are relatively prime to 128972644.
128972644 has 12 divisors, whose sum is 227425968
The reverse of 128972644 is 446279821
Previous prime number is 131
Is Prime? no
Number parity even
Number length 9
Sum of Digits 43
Digital Root 7
Name
one hundred twenty-eight million nine hundred seventy-two thousand six hundred forty-four
Scientific notation
1.28972644 × 10^8
Engineering notation
1.28972644 × 10^6
Prime Factorization
2 × 2 × 131 × 246131
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
64486322
Product of the distinct prime numbers
The prime factorization of 128972644 is 2 × 2 × 131 × 246131.
Since it has a total of 4 prime factors.
3 , 4 , 1 , 17 , 423 , 112 , 6252 , 3557 , 52739 , 15144 , 437140 , 237449 , 7480442 , 7691411 , 36290644 , 48865972 , 140785219 , 863021912 , 9254817388 , 4971205612
n×2
257945288
n×3
386917932
n×4
515890576
n×5
644863220
n÷2
64486322
n÷3
42990881.333333
n÷3
32243161
n÷5
25794528.8
n2
16633942900350736
n3
2.1453235960033E+24
n4
2.7668805641213E+32
n5
3.5685190198693E+40
2 √n
11356.612346999
3 √n
505.24171547877
4 √n
106.56740752687
5 √n
41.888954464012
1 , 2 , 4 , 131 , 262 , 524 , 246131 , 492262 , 984524 , 32243161 , 64486322 , 128972644
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-128972643
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128972644 can be divided by 12 positive divisors.
The sum of these divisors (counting 128972644) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
111101011111111011101100100
3
Ternary
22222200111012121
4
Quaternary
13223333131210
5
Quinary
231004111034
6
Senary
20444155324
8
Octal
753773544
10
Decimal
128972644
12
Duodecimal
37238b44
16
Hexadecimal
7aff764
20
Vigesimal
2061bc4
36
Base36
24sbxg
md5
45af39b83711b1664353f180152c2128
sha1
3b779f04437242f51298a506b1ecd5e73dac0942
sha256
84beb0d6e6e8bd160bb14d6602b775c32433aecdc4cb71b8529bc43c4b5265b7
sha512
6219427a26a35850157319661a62696ffcf001ea21851e11ef6781976cc37a7fe83384a8ef5c63ae008d05f9a608704b53108dc9cbfbbee69df6fdc963d3a8c4
ripemd-160
eb32eb42f745355a5113ba515f8a6fd389c834a6
Diameter
257945288
Circumference
810359021.8089
Area
5.2257072815974E+16
Volume
8.9863104650356E+24
Surface area
2.090282912639E+17
Circumference
810359021.8089
Perimeter
515890576
Area
16633942900350736
Diagonal
182394862.31992
Surface area
99803657402104416
Volume
2.1453235960033E+24
Space diagonal
223387172.19449
Perimeter
386917932
Area
7.2027085584018E+15
Altitude
111693586.09725
Surface area
7.2027085584018E+15
Volume
2.528288104289E+23
Height
60798287.439972