20207721 is an odd 8-digits composite number following 20207720
and preceding 20207722 . In scientific notation, it is written as 2.0207721 × 10^7.
The sum of its digits is 21. It has a total of 4 prime factors and 12 positive divisors.
There are 13154904 positive integers (up to 20207721) that are relatively prime to 20207721.
20207721 has 12 divisors, whose sum is 27592368
The reverse of 20207721 is 12770202
Previous prime number is 43
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 21
Digital Root 3
Name
twenty million two hundred seven thousand seven hundred twenty-one
Scientific notation
2.0207721 × 10^7
Engineering notation
2.0207721 × 10^6
Prime Factorization
3 × 43 × 43 × 3643
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
469947
Product of the distinct prime numbers
The prime factorization of 20207721 is 3 × 43 × 43 × 3643.
Since it has a total of 4 prime factors.
2 , 3 , 54 , 19 , 899 , 301 , 5434 , 3975 , 60376 , 75230 , 818601 , 444751 , 1573401 , 7357420 , 60803715 , 18683207 , 777947289 , 665701913 , 1690879271 , 1066222770
n×2
40415442
n×3
60623163
n×4
80830884
n×5
101038605
n÷2
10103860.5
n÷3
6735907
n÷3
5051930.25
n÷5
4041544.2
n2
408351988013841
n3
8.251863043579E+21
n4
1.6675134611486E+29
n5
3.3696646786634E+36
2 √n
4495.2998787623
3 √n
272.37826282413
4 √n
67.046997537267
5 √n
28.913686473507
1 , 3 , 43 , 129 , 1849 , 3643 , 5547 , 10929 , 156649 , 469947 , 6735907 , 20207721
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20207720
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20207721 can be divided by 12 positive divisors.
The sum of these divisors (counting 20207721) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001101000101100001101001
3
Ternary
1102000122210010
4
Quaternary
1031011201221
5
Quinary
20133121341
6
Senary
2001042133
8
Octal
115054151
10
Decimal
20207721
12
Duodecimal
6926349
16
Hexadecimal
1345869
20
Vigesimal
665j61
36
Base36
c14dl
md5
2ad8c5b7ed56fa867e42109b6f0714b5
sha1
648553bfcf4cad088dac8e6785ae671d0fe2a77d
sha256
851ece7a9230d00e9735f256c25d70348ad962ee0f0b8438657878c0b7c1f945
sha512
4a555d27dff6fe0f28a8146848fac46e15ff2a31fa345e7c5528075b97987788db3cc1e03abfc7cae1bd3cbf7ca590f9c2650f17c6c831cf0c0bc74dc97c0b74
ripemd-160
db4f440b98d8ac8704728121471d39b8bdf2e5c9
Diameter
40415442
Circumference
126968855.67878
Area
1.2828756056231E+15
Volume
3.4565323088183E+22
Surface area
5.1315024224923E+15
Circumference
126968855.67878
Perimeter
80830884
Area
408351988013841
Diagonal
28578033.102852
Surface area
2450111928083046
Volume
8.251863043579E+21
Space diagonal
35000799.477177
Perimeter
60623163
Area
1.7682159765293E+14
Altitude
17500399.738588
Surface area
1.7682159765293E+14
Volume
9.724913859229E+20
Height
9526011.0342839