20990906 is an even 8-digits composite number following 20990905
and preceding 20990907 . In scientific notation, it is written as 2.0990906 × 10^7.
The sum of its digits is 35. It has a total of 3 prime factors and 8 positive divisors.
There are 10156860 positive integers (up to 20990906) that are relatively prime to 20990906.
20990906 has 8 divisors, whose sum is 32502144
The reverse of 20990906 is 60909902
Previous prime number is 31
Is Prime? no
Number parity even
Number length 8
Sum of Digits 35
Digital Root 8
Name
twenty million nine hundred ninety thousand nine hundred six
Scientific notation
2.0990906 × 10^7
Engineering notation
2.0990906 × 10^6
Prime Factorization
2 × 31 × 338563
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20990906
Product of the distinct prime numbers
The prime factorization of 20990906 is 2 × 31 × 338563.
Since it has a total of 3 prime factors.
10 , 4 , 9 , 54 , 166 , 48 , 6542 , 2574 , 19232 , 56084 , 925826 , 227010 , 7616111 , 2673002 , 29810032 , 48037844 , 942451650 , 762886279 , 6989528530 , 8195602274
n×2
41981812
n×3
62972718
n×4
83963624
n×5
104954530
n÷2
10495453
n÷3
6996968.6666667
n÷3
5247726.5
n÷5
4198181.2
n2
440618134700836
n3
9.2489738474006E+21
n4
1.9414434062724E+29
n5
4.0752656045385E+36
2 √n
4581.5833507642
3 √n
275.85258703652
4 √n
67.687394326892
5 √n
29.134410612494
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
-20990905
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 20990906 can be divided by 8 positive divisors.
The sum of these divisors (counting 20990906) is 1, the average is 0.125.
Base
System
Value
2
Binary
1010000000100101110111010
3
Ternary
1110111110002222
4
Quaternary
1100010232322
5
Quinary
20333202111
6
Senary
2025524042
8
Octal
120045672
10
Decimal
20990906
12
Duodecimal
7043622
16
Hexadecimal
1404bba
20
Vigesimal
6b3h56
36
Base36
chwoq
md5
30666f1446fb9ff4ce4046a47f9f2540
sha1
9f30270e5fdc421fc3d07fe0d6f4ab677f8fb867
sha256
ed8eb4fad78154e77dac520b933e9bc6565365f718f922b236a806929c876a5f
sha512
e596ca4f8e8ecead0e4d83a5f2939bfd0213b563eb779c0d1c42b82f8b096e36c0548b775f99d90d3738b528a92c22a624fa6b426818d16bd0ae5370c9f941b8
ripemd-160
5697c1529d84960af4224fd2d9bed2ed9c832a06
Diameter
41981812
Circumference
131889752.16359
Area
1.3842426950146E+15
Volume
3.8742011056317E+22
Surface area
5.5369707800583E+15
Circumference
131889752.16359
Perimeter
83963624
Area
440618134700836
Diagonal
29685623.951699
Surface area
2643708808205016
Volume
9.2489738474006E+21
Space diagonal
36357315.688902
Perimeter
62972718
Area
1.9079324900952E+14
Altitude
18178657.844451
Surface area
1.9079324900952E+14
Volume
1.0900020210857E+21
Height
9895207.9838996