20215909 is an odd 8-digits composite number following 20215908
and preceding 20215910 . In scientific notation, it is written as 2.0215909 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 17327916 positive integers (up to 20215909) that are relatively prime to 20215909.
20215909 has 4 divisors, whose sum is 23103904
The reverse of 20215909 is 90951202
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million two hundred fifteen thousand nine hundred nine
Scientific notation
2.0215909 × 10^7
Engineering notation
2.0215909 × 10^6
Prime Factorization
7 × 2887987
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20215909
Product of the distinct prime numbers
The prime factorization of 20215909 is 7 × 2887987.
Since it has a total of 2 prime factors.
3 , 10 , 49 , 80 , 424 , 668 , 4859 , 5739 , 22723 , 63915 , 329825 , 645373 , 360106 , 8177373 , 22133125 , 90068 , 796921415 , 284757714 , 1872455240 , 7867439690
n×2
40431818
n×3
60647727
n×4
80863636
n×5
101079545
n÷2
10107954.5
n÷3
6738636.3333333
n÷3
5053977.25
n÷5
4043181.8
n2
408682976696281
n3
8.2618978667411E+21
n4
1.6702177544133E+29
n5
3.3764970133404E+36
2 √n
4496.2105155342
3 √n
272.4150463232
4 √n
67.053788226573
5 √n
28.916029210754
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
-20215908
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 20215909 can be divided by 4 positive divisors.
The sum of these divisors (counting 20215909) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001101000111100001100101
3
Ternary
1102001002000101
4
Quaternary
1031013201211
5
Quinary
20133402114
6
Senary
2001144101
8
Octal
115074145
10
Decimal
20215909
12
Duodecimal
692b031
16
Hexadecimal
1347865
20
Vigesimal
666jf9
36
Base36
c1ap1
md5
2a77996cd6eba12fe27755a30dcbab27
sha1
5a98e11d0e39761033df013f075672555cf628b6
sha256
57a504463333e8c9c6492af154ae9be5b2e181827c3b0cb30a7591d0cb32ab8c
sha512
a8d80abb4617294cb7c60590801d246174a5431529a4be5505e66a3c670bec969b94a4cad76a2cb4f7b69380d1b12ae6461175f61d4a044acc19f5bb22a6f898
ripemd-160
c0aa83e2ae811c6d1f089dda95fe329eb86590aa
Diameter
40431818
Circumference
127020302.40008
Area
1.2839154372362E+15
Volume
3.4607356857151E+22
Surface area
5.135661748945E+15
Circumference
127020302.40008
Perimeter
80863636
Area
408682976696281
Diagonal
28589612.6835
Surface area
2452097860177686
Volume
8.2618978667411E+21
Space diagonal
35014981.509189
Perimeter
60647727
Area
1.7696491995661E+14
Altitude
17507490.754594
Surface area
1.7696491995661E+14
Volume
9.7367400117389E+20
Height
9529870.8945001