20210809 is an odd 8-digits composite number following 20210808
and preceding 20210810 . In scientific notation, it is written as 2.0210809 × 10^7.
The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors.
There are 20201616 positive integers (up to 20210809) that are relatively prime to 20210809.
20210809 has 4 divisors, whose sum is 20220004
The reverse of 20210809 is 90801202
Previous prime number is 5557
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty million two hundred ten thousand eight hundred nine
Scientific notation
2.0210809 × 10^7
Engineering notation
2.0210809 × 10^6
Prime Factorization
5557 × 3637
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20210809
Product of the distinct prime numbers
The prime factorization of 20210809 is 5557 × 3637.
Since it has a total of 2 prime factors.
7 , 8 , 50 , 80 , 959 , 535 , 2796 , 2046 , 46989 , 65409 , 208665 , 174567 , 5816981 , 1918808 , 19492259 , 62129375 , 377458905 , 811623168 , 8251891838 , 8827090030
n×2
40421618
n×3
60632427
n×4
80843236
n×5
101054045
n÷2
10105404.5
n÷3
6736936.3333333
n÷3
5052702.25
n÷5
4042161.8
n2
408476800434481
n3
8.2556465945124E+21
n4
1.6685329649319E+29
n5
3.3722401064442E+36
2 √n
4495.6433354972
3 √n
272.39213641953
4 √n
67.049558801659
5 √n
28.914570096225
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
-20210808
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 20210809 can be divided by 4 positive divisors.
The sum of these divisors (counting 20210809) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001101000110010001111001
3
Ternary
1102000211000111
4
Quaternary
1031012101321
5
Quinary
20133221214
6
Senary
2001104321
8
Octal
115062171
10
Decimal
20210809
12
Duodecimal
69280a1
16
Hexadecimal
1346479
20
Vigesimal
666709
36
Base36
c16rd
md5
4dc3534663709a932ff6697eb477ae2d
sha1
0dde1c48028c03bdd6719ccc6304c2202e3c7eba
sha256
342ee70659b0f79d2c5c0b34cc046b5625190c67f1fbe0f16bbf727fb986033a
sha512
9bfd7fabecd0d1083635a017a34d7b8a4c814603919d98e1cb7dcfe0663ca2b77c5090eb139f50f0a7cb7b184188e9c32e03852a71210a2965a8734fe02a6e95
ripemd-160
e69fcda64f96281d7f5879b89cc6090d53d19e05
Diameter
40421618
Circumference
126988258.15501
Area
1.2832677154068E+15
Volume
3.4581171589272E+22
Surface area
5.1330708616273E+15
Circumference
126988258.15501
Perimeter
80843236
Area
408476800434481
Diagonal
28582400.194332
Surface area
2450860802606886
Volume
8.2556465945124E+21
Space diagonal
35006148.05007
Perimeter
60632427
Area
1.7687564301642E+14
Altitude
17503074.025035
Surface area
1.7687564301642E+14
Volume
9.7293728167656E+20
Height
9527466.7314441