12728985 is an odd 8-digits composite number following 12728984
and preceding 12728986 . In scientific notation, it is written as 1.2728985 × 10^7.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 6788784 positive integers (up to 12728985) that are relatively prime to 12728985.
12728985 has 8 divisors, whose sum is 20366400
The reverse of 12728985 is 58982721
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twelve million seven hundred twenty-eight thousand nine hundred eighty-five
Scientific notation
1.2728985 × 10^7
Engineering notation
1.2728985 × 10^6
Prime Factorization
3 × 5 × 848599
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
12728985
Product of the distinct prime numbers
The prime factorization of 12728985 is 3 × 5 × 848599.
Since it has a total of 3 prime factors.
5 , 7 , 39 , 19 , 728 , 77 , 2857 , 805 , 88008 , 7421 , 576812 , 196314 , 2565280 , 7056247 , 42938228 , 32346055 , 239693653 , 162542353 , 3743638997 , 98981777
n×2
25457970
n×3
38186955
n×4
50915940
n×5
63644925
n÷2
6364492.5
n÷3
4242995
n÷3
3182246.25
n÷5
2545797
n2
162027059130225
n3
2.0624400052627E+21
n4
2.6252767890389E+28
n5
3.3417108868525E+35
2 √n
3567.7703121137
3 √n
233.48801421663
4 √n
59.730815431515
5 √n
26.360810246462
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
-12728984
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 12728985 can be divided by 8 positive divisors.
The sum of these divisors (counting 12728985) is 1, the average is 0.125.
Base
System
Value
2
Binary
110000100011101010011001
3
Ternary
212221200212220
4
Quaternary
300203222121
5
Quinary
11224311420
6
Senary
1132454253
8
Octal
60435231
10
Decimal
12728985
12
Duodecimal
431a389
16
Hexadecimal
c23a99
20
Vigesimal
3jb295
36
Base36
7ktqx
md5
dadc40be30d404333509ded0b033cca5
sha1
f65f051aee0194bcd5a44038f2139d7d4c687226
sha256
94038a26f7b7cf8778c94fc7d0f2aa5bbc9926dda0d4cd7111ba3e38ea7bfb0b
sha512
e883fb407db2424e10d372bdd7b52a41a8675f11fdb66ccc1d64b18af074803305a0a208ffcb60ce2921d0e8c19c6f1f2f48726ece17e0f614c1ae60ac55755a
ripemd-160
9bcf25cba6152f5a2a4eee700f931abf19692426
Diameter
25457970
Circumference
79978571.527309
Area
5.0902301864627E+14
Volume
8.6391284920042E+21
Surface area
2.0360920745851E+15
Circumference
79978571.527309
Perimeter
50915940
Area
162027059130225
Diagonal
18001503.222244
Surface area
972162354781350
Volume
2.0624400052627E+21
Space diagonal
22047248.748782
Perimeter
38186955
Area
70159774653629
Altitude
11023624.374391
Surface area
70159774653629
Volume
2.4306088558528E+20
Height
6000501.0740812