20790721 is an odd 8-digits composite number following 20790720
and preceding 20790722 . In scientific notation, it is written as 2.0790721 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 17797968 positive integers (up to 20790721) that are relatively prime to 20790721.
20790721 has 8 divisors, whose sum is 23791040
The reverse of 20790721 is 12709702
Previous prime number is 2659
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million seven hundred ninety thousand seven hundred twenty-one
Scientific notation
2.0790721 × 10^7
Engineering notation
2.0790721 × 10^6
Prime Factorization
7 × 2659 × 1117
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20790721
Product of the distinct prime numbers
The prime factorization of 20790721 is 7 × 2659 × 1117.
Since it has a total of 3 prime factors.
3 , 6 , 59 , 59 , 752 , 491 , 2994 , 9584 , 68548 , 92782 , 705964 , 339177 , 7808132 , 8120169 , 84706300 , 67397685 , 86045121 , 9275861 , 8690043636 , 2017991024
n×2
41581442
n×3
62372163
n×4
83162884
n×5
103953605
n÷2
10395360.5
n÷3
6930240.3333333
n÷3
5197680.25
n÷5
4158144.2
n2
432254079699841
n3
8.9868739721512E+21
n4
1.8684358941716E+29
n5
3.8846129382107E+36
2 √n
4559.6843092477
3 √n
274.97287225516
4 √n
67.525434535794
5 √n
29.078627898626
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
-20790720
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 20790721 can be divided by 8 positive divisors.
The sum of these divisors (counting 20790721) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111010011110111000001
3
Ternary
1110010021111201
4
Quaternary
1033103313001
5
Quinary
20310300341
6
Senary
2021341201
8
Octal
117236701
10
Decimal
20790721
12
Duodecimal
6b67801
16
Hexadecimal
13d3dc1
20
Vigesimal
69igg1
36
Base36
cdm81
md5
1104b69d118b6d4f80448f790e9ac12e
sha1
07902f47c79e58e666b50cb9bc0b350aceed6345
sha256
73c21f65bc8cd466217ec86378966ca965ccccc36cb54ee9f99d3c81b4da9b9b
sha512
9f4d2a67826c4c8c06ab225f99545b9cc280158638f4fc8f592420cbbafd64dc8a4aa6756af0c8fcafc165e63e3234d1823845bbed6cab5f10e839069a3a0351
ripemd-160
8bb9bbfe6ed4f0f66caf3cfbdb3cba40b77eb17f
Diameter
41581442
Circumference
130631952.71287
Area
1.3579662412692E+15
Volume
3.7644129666197E+22
Surface area
5.431864965077E+15
Circumference
130631952.71287
Perimeter
83162884
Area
432254079699841
Diagonal
29402519.609715
Surface area
2593524478199046
Volume
8.9868739721512E+21
Space diagonal
36010585.097989
Perimeter
62372163
Area
1.8717150695476E+14
Altitude
18005292.548995
Surface area
1.8717150695476E+14
Volume
1.0591132545628E+21
Height
9800839.869905