128972649 is an odd 9-digits composite number following 128972648
and preceding 128972650 . In scientific notation, it is written as 1.28972649 × 10^8.
The sum of its digits is 48. It has a total of 3 prime factors and 8 positive divisors.
There are 79367760 positive integers (up to 128972649) that are relatively prime to 128972649.
128972649 has 8 divisors, whose sum is 185191552
The reverse of 128972649 is 946279821
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 48
Digital Root 3
Name
one hundred twenty-eight million nine hundred seventy-two thousand six hundred forty-nine
Scientific notation
1.28972649 × 10^8
Engineering notation
1.28972649 × 10^6
Prime Factorization
3 × 13 × 3306991
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
128972649
Product of the distinct prime numbers
The prime factorization of 128972649 is 3 × 13 × 3306991.
Since it has a total of 3 prime factors.
4 , 9 , 59 , 14 , 650 , 303 , 7143 , 4212 , 67443 , 74714 , 610949 , 517619 , 3263696 , 4727948 , 1368913 , 93130388 , 65222068 , 869857829 , 4810200311 , 7029848372
n×2
257945298
n×3
386917947
n×4
515890596
n×5
644863245
n÷2
64486324.5
n÷3
42990883
n÷3
32243162.25
n÷5
25794529.8
n2
16633944190077201
n3
2.1453238455124E+24
n4
2.766880993186E+32
n5
3.5685197115895E+40
2 √n
11356.612567135
3 √n
505.24172200783
4 √n
106.56740855972
5 √n
41.888954788801
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
-128972648
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 128972649 can be divided by 8 positive divisors.
The sum of these divisors (counting 128972649) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101011111111011101101001
3
Ternary
22222200111012210
4
Quaternary
13223333131221
5
Quinary
231004111044
6
Senary
20444155333
8
Octal
753773551
10
Decimal
128972649
12
Duodecimal
37238b49
16
Hexadecimal
7aff769
20
Vigesimal
2061bc9
36
Base36
24sbxl
md5
7c679a9ee6099d552abd38eee5227bc0
sha1
ecad297534b1852ac5863f6aad1e128ac606bedb
sha256
49338d6bcb66504a0355af44f9e382d1529eb9ad13e881c4285c9cda1a7e73a9
sha512
958ac0da8ba3a72f404433398150ce75a893a78bce766c0d33b080b0b4d38d3fc59dbf1e68ff6ff5bb32e6989b544229a0b49f7a19bd06b2955cbb8a02603550
ripemd-160
96efe40c826e8dc230b793655cfd319955e5d21d
Diameter
257945298
Circumference
810359053.22483
Area
5.2257076867769E+16
Volume
8.9863115101771E+24
Surface area
2.0902830747108E+17
Circumference
810359053.22483
Perimeter
515890596
Area
16633944190077201
Diagonal
182394869.39098
Surface area
99803665140463206
Volume
2.1453238455124E+24
Space diagonal
223387180.85475
Perimeter
386917947
Area
7.2027091168697E+15
Altitude
111693590.42737
Surface area
7.2027091168697E+15
Volume
2.5282883983384E+23
Height
60798289.796995