20802908 is an even 8-digits composite number following 20802907
and preceding 20802909 . In scientific notation, it is written as 2.0802908 × 10^7.
The sum of its digits is 29. It has a total of 4 prime factors and 12 positive divisors.
There are 8697600 positive integers (up to 20802908) that are relatively prime to 20802908.
20802908 has 12 divisors, whose sum is 36533952
The reverse of 20802908 is 80920802
Previous prime number is 287
Is Prime? no
Number parity even
Number length 8
Sum of Digits 29
Digital Root 2
Name
twenty million eight hundred two thousand nine hundred eight
Scientific notation
2.0802908 × 10^7
Engineering notation
2.0802908 × 10^6
Prime Factorization
2 × 2 × 287 × 18121
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10401454
Product of the distinct prime numbers
The prime factorization of 20802908 is 2 × 2 × 287 × 18121.
Since it has a total of 4 prime factors.
10 , 1 , 87 , 22 , 818 , 924 , 8701 , 6928 , 58808 , 86330 , 735559 , 141887 , 1383738 , 2289584 , 94930081 , 71508628 , 782540861 , 636759049 , 8371453267 , 4642713458
n×2
41605816
n×3
62408724
n×4
83211632
n×5
104014540
n÷2
10401454
n÷3
6934302.6666667
n÷3
5200727
n÷5
4160581.6
n2
432760981256464
n3
9.0026868790679E+21
n4
1.8728206689806E+29
n5
3.8960116077301E+36
2 √n
4561.0204998443
3 √n
275.0265891646
4 √n
67.535327791048
5 √n
29.082036132286
1 , 2 , 4 , 287 , 574 , 1148 , 18121 , 36242 , 72484 , 5200727 , 10401454 , 20802908
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
-20802907
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 20802908 can be divided by 12 positive divisors.
The sum of these divisors (counting 20802908) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1001111010110110101011100
3
Ternary
1110010220020002
4
Quaternary
1033112311130
5
Quinary
20311143113
6
Senary
2021513432
8
Octal
117266534
10
Decimal
20802908
12
Duodecimal
6b72878
16
Hexadecimal
13d6d5c
20
Vigesimal
6a0758
36
Base36
cdvmk
md5
e1beeb2664cea7bd5d2247542cb7e00a
sha1
643434316265a5c8b1f5e7ca3cd69b9960ddbaad
sha256
78742f5961db0df38d9408db5ab0f71d2091715801619d25f73903fa26e6d1f3
sha512
02d55f0bdc60f6ac2a90262f8b81194ba736912d0c5009a6a4e41e23f1f6aa5713538ed9bec0fa9de703252a45856a2eec2b5fe9d59700cb220d88059939640a
ripemd-160
bcd841972fdaaa78606df47d4697b15c55d095bf
Diameter
41605816
Circumference
130708525.89221
Area
1.3595587194756E+15
Volume
3.7710366615799E+22
Surface area
5.4382348779025E+15
Circumference
130708525.89221
Perimeter
83211632
Area
432760981256464
Diagonal
29419754.6304
Surface area
2596565887538784
Volume
9.0026868790679E+21
Space diagonal
36031693.601181
Perimeter
62408724
Area
1.8739100176739E+14
Altitude
18015846.800591
Surface area
1.8739100176739E+14
Volume
1.0609768235147E+21
Height
9806584.8767999