20306721 is an odd 8-digits composite number following 20306720
and preceding 20306722 . In scientific notation, it is written as 2.0306721 × 10^7.
The sum of its digits is 21. It has a total of 3 prime factors and 8 positive divisors.
There are 12741440 positive integers (up to 20306721) that are relatively prime to 20306721.
20306721 has 8 divisors, whose sum is 28668384
The reverse of 20306721 is 12760302
Previous prime number is 17
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty million three hundred six thousand seven hundred twenty-one
Scientific notation
2.0306721 × 10^7
Engineering notation
2.0306721 × 10^6
Prime Factorization
3 × 17 × 398171
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20306721
Product of the distinct prime numbers
The prime factorization of 20306721 is 3 × 17 × 398171.
Since it has a total of 3 prime factors.
1 , 8 , 74 , 40 , 830 , 481 , 779 , 9242 , 93185 , 67426 , 498860 , 604271 , 4305994 , 836426 , 45715518 , 22865351 , 143595353 , 393720633 , 1730332772 , 4710435858
n×2
40613442
n×3
60920163
n×4
81226884
n×5
101533605
n÷2
10153360.5
n÷3
6768907
n÷3
5076680.25
n÷5
4061344.2
n2
412362917771841
n3
8.3737387219387E+21
n4
1.7004317595331E+29
n5
3.4530193320377E+36
2 √n
4506.2979262361
3 √n
272.82234278495
4 √n
67.128964882799
5 √n
28.941961428332
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
-20306720
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 20306721 can be divided by 8 positive divisors.
The sum of these divisors (counting 20306721) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101011101101100100001
3
Ternary
1102012200120210
4
Quaternary
1031131230201
5
Quinary
20144303341
6
Senary
2003124333
8
Octal
115355441
10
Decimal
20306721
12
Duodecimal
69736a9
16
Hexadecimal
135db21
20
Vigesimal
66i6g1
36
Base36
c38rl
md5
25d75323e4f33bf391b619fc19832ff4
sha1
5a0aac5a9bf3c7fbe2e0f288efbd2dcfa1b1cc54
sha256
0e3289cd5d12b82a10fbadf9c6de52cd980093d2d10a197fd4c0d3679f2697ec
sha512
55abf8205d01d53fdddffbf6233d875e1077a13d1004ed2ed7aa7da7b1251d6ed5e046827b02bc16fb860373518a846ffd379be817fa28406741a7db888bfbaa
ripemd-160
2936dc665f5520a68f0e4ddfb3ed95bc712da491
Diameter
40613442
Circumference
127590891.0242
Area
1.2954763130849E+15
Volume
3.5075834735897E+22
Surface area
5.1819052523395E+15
Circumference
127590891.0242
Perimeter
81226884
Area
412362917771841
Diagonal
28718040.245527
Surface area
2474177506631046
Volume
8.3737387219387E+21
Space diagonal
35172272.507126
Perimeter
60920163
Area
1.7855838118454E+14
Altitude
17586136.253563
Surface area
1.7855838118454E+14
Volume
9.8685457236121E+20
Height
9572680.0818422