20090921 is an odd 8-digits composite number following 20090920
and preceding 20090922 . In scientific notation, it is written as 2.0090921 × 10^7.
The sum of its digits is 23. It has a total of 2 prime factors and 4 positive divisors.
There are 19946244 positive integers (up to 20090921) that are relatively prime to 20090921.
20090921 has 4 divisors, whose sum is 20235600
The reverse of 20090921 is 12909002
Previous prime number is 139
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 23
Digital Root 5
Name
twenty million ninety thousand nine hundred twenty-one
Scientific notation
2.0090921 × 10^7
Engineering notation
2.0090921 × 10^6
Prime Factorization
139 × 144539
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20090921
Product of the distinct prime numbers
The prime factorization of 20090921 is 139 × 144539.
Since it has a total of 2 prime factors.
3 , 3 , 73 , 4 , 766 , 222 , 1735 , 6085 , 65439 , 88157 , 278650 , 855045 , 8907670 , 6296927 , 67910901 , 16194157 , 241451799 , 788730896 , 7363445529 , 1617266965
n×2
40181842
n×3
60272763
n×4
80363684
n×5
100454605
n÷2
10045460.5
n÷3
6696973.6666667
n÷3
5022730.25
n÷5
4018184.2
n2
403645106628241
n3
8.1096019493046E+21
n4
1.6292937210492E+29
n5
3.2734011435396E+36
2 √n
4482.2897050503
3 √n
271.85246919467
4 √n
66.949904443922
5 √n
28.880184886427
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
-20090920
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 20090921 can be divided by 4 positive divisors.
The sum of these divisors (counting 20090921) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100101001000000101001
3
Ternary
1101210201120012
4
Quaternary
1030221000221
5
Quinary
20120402141
6
Senary
1554341305
8
Octal
114510051
10
Decimal
20090921
12
Duodecimal
688a835
16
Hexadecimal
1329029
20
Vigesimal
65b761
36
Base36
bym95
md5
e36ea8fab68b561f02c434d5bb2b0e2c
sha1
a8bd3e33d4af48b7cf90d6ec85e56ccfd528c683
sha256
477f1e161652877d0f74da1f9e297fa7222cacb9f0261335b3d95afc2672a77f
sha512
49e8cae6c2d04a617cdeb00bb2a248df7930ebf43fe2fc36974321cf82308db7e6a9138e635c3db83dfed3f2f0107c1bd165e4e69f5e15143595fce22c051288
ripemd-160
1f103edaf8fa5f6f8d028e32e62cdeb1ddf61bef
Diameter
40181842
Circumference
126234979.63491
Area
1.2680885016408E+15
Volume
3.3969421209964E+22
Surface area
5.072354006563E+15
Circumference
126234979.63491
Perimeter
80363684
Area
403645106628241
Diagonal
28412852.958766
Surface area
2421870639769446
Volume
8.1096019493046E+21
Space diagonal
34798495.942853
Perimeter
60272763
Area
1.7478345822667E+14
Altitude
17399247.971426
Surface area
1.7478345822667E+14
Volume
9.5572575517948E+20
Height
9470950.9862555