12721645 is an odd 8-digits composite number following 12721644
and preceding 12721646 . In scientific notation, it is written as 1.2721645 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 9734736 positive integers (up to 12721645) that are relatively prime to 12721645.
12721645 has 8 divisors, whose sum is 15929856
The reverse of 12721645 is 54612721
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twelve million seven hundred twenty-one thousand six hundred forty-five
Scientific notation
1.2721645 × 10^7
Engineering notation
1.2721645 × 10^6
Prime Factorization
5 × 23 × 110623
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
12721645
Product of the distinct prime numbers
The prime factorization of 12721645 is 5 × 23 × 110623.
Since it has a total of 3 prime factors.
8 , 7 , 55 , 31 , 384 , 91 , 3941 , 1947 , 10871 , 16903 , 765038 , 722519 , 9275339 , 1983457 , 99213661 , 50818742 , 245466661 , 486291574 , 385663455 , 9477866358
n×2
25443290
n×3
38164935
n×4
50886580
n×5
63608225
n÷2
6360822.5
n÷3
4240548.3333333
n÷3
3180411.25
n÷5
2544329
n2
161840251506025
n3
2.0588742263704E+21
n4
2.6192267007533E+28
n5
3.3320872261505E+35
2 √n
3566.7415101182
3 √n
233.44312633428
4 √n
59.722202823725
5 √n
26.357769422835
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
-12721644
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 12721645 can be divided by 8 positive divisors.
The sum of these divisors (counting 12721645) is 1, the average is 0.125.
Base
System
Value
2
Binary
110000100001110111101101
3
Ternary
212221022211001
4
Quaternary
300201313231
5
Quinary
11224043040
6
Senary
1132400301
8
Octal
60416755
10
Decimal
12721645
12
Duodecimal
4316091
16
Hexadecimal
c21ded
20
Vigesimal
3ja425
36
Base36
7ko31
md5
9a59e714244b2fd311733dbb985e1995
sha1
8d336f103339b54251ee01befd02f7fcc9f62728
sha256
173e1d9ab8ec0ad7b730ef45dff31251211d2465e8a770f039285a070f2b4760
sha512
6f934821fe3563ba0264d7e01a9c045bb3e56ad8d46ffb70ac21a5f029c1a828d2fe6ef6ba0336340e8a6f05172d0aea2a05bbf22e15bc082dc7c187127334f8
ripemd-160
88505360717d2a3e6461fa5946d736acddc45b65
Diameter
25443290
Circumference
79932452.947155
Area
5.0843614518645E+14
Volume
8.6241921923073E+21
Surface area
2.0337445807458E+15
Circumference
79932452.947155
Perimeter
50886580
Area
161840251506025
Diagonal
17991122.894696
Surface area
971041509036150
Volume
2.0588742263704E+21
Space diagonal
22034535.495855
Perimeter
38164935
Area
70078884579540
Altitude
11017267.747927
Surface area
70078884579540
Volume
2.4264065451278E+20
Height
5997040.9648986