128972646 is an even 9-digits composite number following 128972645
and preceding 128972647 . In scientific notation, it is written as 1.28972646 × 10^8.
The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors.
There are 37024560 positive integers (up to 128972646) that are relatively prime to 128972646.
128972646 has 16 divisors, whose sum is 215989200
The reverse of 128972646 is 646279821
Previous prime number is 9
Is Prime? no
Number parity even
Number length 9
Sum of Digits 45
Digital Root 9
Name
one hundred twenty-eight million nine hundred seventy-two thousand six hundred forty-six
Scientific notation
1.28972646 × 10^8
Engineering notation
1.28972646 × 10^6
Prime Factorization
2 × 209 × 9 × 34283
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
128972646
Product of the distinct prime numbers
The prime factorization of 128972646 is 2 × 209 × 9 × 34283.
Since it has a total of 4 prime factors.
9 , 9 , 56 , 50 , 799 , 433 , 232 , 9159 , 17777 , 61215 , 233169 , 193002 , 5414587 , 6860236 , 80991910 , 46645771 , 281815532 , 429021556 , 8216407802 , 6460237917
n×2
257945292
n×3
386917938
n×4
515890584
n×5
644863230
n÷2
64486323
n÷3
42990882
n÷3
32243161.5
n÷5
25794529.2
n2
16633943416241316
n3
2.1453236958069E+24
n4
2.7668807357472E+32
n5
3.5685192965574E+40
2 √n
11356.612435053
3 √n
505.2417180904
4 √n
106.56740794001
5 √n
41.888954593927
1 , 2 , 9 , 18 , 209 , 418 , 1881 , 3762 , 34283 , 68566 , 308547 , 617094 , 7165147 , 14330294 , 64486323 , 128972646
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-128972645
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 128972646 can be divided by 16 positive divisors.
The sum of these divisors (counting 128972646) is 1, the average is 0.0625.
Base
System
Value
2
Binary
111101011111111011101100110
3
Ternary
22222200111012200
4
Quaternary
13223333131212
5
Quinary
231004111041
6
Senary
20444155330
8
Octal
753773546
10
Decimal
128972646
12
Duodecimal
37238b46
16
Hexadecimal
7aff766
20
Vigesimal
2061bc6
36
Base36
24sbxi
md5
17a90ad9e07b921dd024928c1e41b90d
sha1
ff60d443c3b3356516d5db82ea6c75c18560161b
sha256
377612faa74e6d4814f41d2b2cf1be8ed2a5238b2726f5584a9fb87c13ffd7fb
sha512
6ed9c1c2028680b949c91ff162d703598022588a60cf67863fd46cf87333da2efc3f8574b18e604bc6a520c9877a8f5a66057b7039057e54d6db591281ac403a
ripemd-160
c6bcc7ddffa27aef7cd4dd47f533f706355317f6
Diameter
257945292
Circumference
810359034.37527
Area
5.2257074436692E+16
Volume
8.9863108830922E+24
Surface area
2.0902829774677E+17
Circumference
810359034.37527
Perimeter
515890584
Area
16633943416241316
Diagonal
182394865.14834
Surface area
99803660497447896
Volume
2.1453236958069E+24
Space diagonal
223387175.65859
Perimeter
386917938
Area
7.2027087817889E+15
Altitude
111693587.8293
Surface area
7.2027087817889E+15
Volume
2.5282882219088E+23
Height
60798288.382781