20791721 is an odd 8-digits prime number following 20791720
and preceding 20791722 . In scientific notation, it is written as 2.0791721 × 10^7.
The sum of its digits is 29. It has a total of 1 prime factors and 2 positive divisors.
There are 20791720 positive integers (up to 20791721) that are relatively prime to 20791721.
20791721 has 2 divisors, whose sum is 20791722
The reverse of 20791721 is 12719702
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty million seven hundred ninety-one thousand seven hundred twenty-one
Scientific notation
2.0791721 × 10^7
Engineering notation
2.0791721 × 10^6
Prime Factorization
20791721
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
20791721
Product of the distinct prime numbers
The prime factorization of 20791721 is 20791721.
Since it has a total of 1 prime factors.
2 , 4 , 77 , 71 , 703 , 934 , 8441 , 2104 , 70138 , 27716 , 220034 , 36446 , 1528377 , 7576252 , 72329269 , 90133137 , 255690792 , 682899122 , 816262305 , 1551425233
n×2
41583442
n×3
62375163
n×4
83166884
n×5
103958605
n÷2
10395860.5
n÷3
6930573.6666667
n÷3
5197930.25
n÷5
4158344.2
n2
432295662141841
n3
8.9881707967634E+21
n4
1.8687953950665E+29
n5
3.8855472460308E+36
2 √n
4559.7939646436
3 √n
274.97728076772
4 √n
67.526246487152
5 √n
29.078907620223
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
20791722
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10395861
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4559.7940742977
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999038079
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20791721 can be divided by 2 positive divisors.
The sum of these divisors (counting 20791721) is 20791722, the average is 10395861.
Base
System
Value
2
Binary
1001111010100000110101001
3
Ternary
1110010022212202
4
Quaternary
1033110012221
5
Quinary
20310313341
6
Senary
2021345545
8
Octal
117240651
10
Decimal
20791721
12
Duodecimal
6b682b5
16
Hexadecimal
13d41a9
20
Vigesimal
69ij61
36
Base36
cdmzt
md5
e891798ee10f7124cc5ff7b9b3c2a1e3
sha1
0be83da5a2e589363b5982deaed9c70f605e37f6
sha256
359f55304b8b0177d6b2501ab969f6e5da6243a6250c0d1fdc9f9f8c4f796be9
sha512
3072cd41e6979d08c3b99abb0d387243793333c8668287f67983f5448f286140202eea1c1490327075b1bf9095a84077660bfdb17cedbc9b298a67ba9c440b9a
ripemd-160
a3c7967a0a7e6ecd8b91fa0b238690bcd414ce1a
Diameter
41583442
Circumference
130638235.89818
Area
1.3580968763635E+15
Volume
3.764956179243E+22
Surface area
5.4323875054542E+15
Circumference
130638235.89818
Perimeter
83166884
Area
432295662141841
Diagonal
29403933.823277
Surface area
2593773972851046
Volume
8.9881707967634E+21
Space diagonal
36012317.148797
Perimeter
62375163
Area
1.8718951268032E+14
Altitude
18006158.574398
Surface area
1.8718951268032E+14
Volume
1.0592660868091E+21
Height
9801311.2744258