20828081 is an odd 8-digits composite number following 20828080
and preceding 20828082 . In scientific notation, it is written as 2.0828081 × 10^7.
The sum of its digits is 29. It has a total of 2 prime factors and 4 positive divisors.
There are 20818164 positive integers (up to 20828081) that are relatively prime to 20828081.
20828081 has 4 divisors, whose sum is 20838000
The reverse of 20828081 is 18082802
Previous prime number is 6899
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty million eight hundred twenty-eight thousand eighty-one
Scientific notation
2.0828081 × 10^7
Engineering notation
2.0828081 × 10^6
Prime Factorization
6899 × 3019
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20828081
Product of the distinct prime numbers
The prime factorization of 20828081 is 6899 × 3019.
Since it has a total of 2 prime factors.
5 , 10 , 66 , 17 , 989 , 648 , 4327 , 138 , 37358 , 5777 , 918770 , 232236 , 3243878 , 4634079 , 12127976 , 10090163 , 540757632 , 187471694 , 9952589873 , 4438652546
n×2
41656162
n×3
62484243
n×4
83312324
n×5
104140405
n÷2
10414040.5
n÷3
6942693.6666667
n÷3
5207020.25
n÷5
4165616.2
n2
433808958142561
n3
9.0354081187189E+21
n4
1.8819021216473E+29
n5
3.9196409823743E+36
2 √n
4563.7792453185
3 √n
275.13747836762
4 √n
67.555749165549
5 √n
29.08907099495
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20828080
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20828081 can be divided by 4 positive divisors.
The sum of these divisors (counting 20828081) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111011100111110110001
3
Ternary
1110012011202102
4
Quaternary
1033130332301
5
Quinary
20312444311
6
Senary
2022230145
8
Octal
117347661
10
Decimal
20828081
12
Duodecimal
6b85355
16
Hexadecimal
13dcfb1
20
Vigesimal
6a3a41
36
Base36
cef1t
md5
6822fbb1e91612e48ef28df913ad6d2a
sha1
313ac14b447bdc17396d8bcbac0d4bdae404aca9
sha256
01f7679d3139c2f4a2adad11e3e60f644bf7fe4d36d7f14771e9a211a6a4694f
sha512
3ba923fe39ebbe9657ac58f8a916ceee13b9da5bdd5ffb6c635715b2824e37ab629763edbdf274499e5dcd0ab5c76dbda013833ca7f8779140a1bdc8821e38dc
ripemd-160
629f0fd0ccab89ea49b4217c030138c1863a41a0
Diameter
41656162
Circumference
130866692.51595
Area
1.3628510359621E+15
Volume
3.7847429023937E+22
Surface area
5.4514041438484E+15
Circumference
130866692.51595
Perimeter
83312324
Area
433808958142561
Diagonal
29455354.628405
Surface area
2602853748855366
Volume
9.0354081187189E+21
Space diagonal
36075294.51616
Perimeter
62484243
Area
1.8784478907036E+14
Altitude
18037647.25808
Surface area
1.8784478907036E+14
Volume
1.064833058589E+21
Height
9818451.5428018