20115209 is an odd 8-digits composite number following 20115208
and preceding 20115210 . In scientific notation, it is written as 2.0115209 × 10^7.
The sum of its digits is 20. It has a total of 3 prime factors and 6 positive divisors.
There are 19810560 positive integers (up to 20115209) that are relatively prime to 20115209.
20115209 has 6 divisors, whose sum is 20424474
The reverse of 20115209 is 90251102
Previous prime number is 67
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 20
Digital Root 2
Name
twenty million one hundred fifteen thousand two hundred nine
Scientific notation
2.0115209 × 10^7
Engineering notation
2.0115209 × 10^6
Prime Factorization
67 × 67 × 4481
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
300227
Product of the distinct prime numbers
The prime factorization of 20115209 is 67 × 67 × 4481.
Since it has a total of 3 prime factors.
3 , 6 , 38 , 55 , 397 , 247 , 8922 , 7831 , 64198 , 78482 , 349063 , 734177 , 4839380 , 6595726 , 75122368 , 28646314 , 577479467 , 153676371 , 8038634539 , 8466241571
n×2
40230418
n×3
60345627
n×4
80460836
n×5
100576045
n÷2
10057604.5
n÷3
6705069.6666667
n÷3
5028802.25
n÷5
4023041.8
n2
404621633113681
n3
8.139048716003E+21
n4
1.6371866598358E+29
n5
3.2932351834609E+36
2 √n
4484.9982162761
3 √n
271.96197294943
4 √n
66.970129283705
5 √n
28.887164188032
6 divisors
τ
Total Divisors
6
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20115208
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.16666666666667
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
6
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20115209 can be divided by 6 positive divisors.
The sum of these divisors (counting 20115209) is 1, the average is 0.16666666666667.
Base
System
Value
2
Binary
1001100101110111100001001
3
Ternary
1101211221212202
4
Quaternary
1030232330021
5
Quinary
20122141314
6
Senary
1555045545
8
Octal
114567411
10
Decimal
20115209
12
Duodecimal
68a08b5
16
Hexadecimal
132ef09
20
Vigesimal
65e809
36
Base36
bz4zt
md5
06f403ab0b17d51a96c5cbb4f582bd9b
sha1
f7dc5bdf39e19ac25da47645a621d65ff67310de
sha256
f6558206762e1e5ace9c3e23b0c7f7384a9dd7d51be6fdbbf3680a6dfaa54aef
sha512
4e1e8ad1edaba10aebc4fdeb5660cd5045559c4a5e5de985799483a66ab7a668541757a88098cb755795afedb354675826d0b8f477cc7be59f2ddce6123acb07
ripemd-160
04b5f1fb7083d702ac8d95628c2cb7dba6f4326f
Diameter
40230418
Circumference
126387585.63965
Area
1.2711563500734E+15
Volume
3.4092767537873E+22
Surface area
5.0846254002938E+15
Circumference
126387585.63965
Perimeter
80460836
Area
404621633113681
Diagonal
28447201.377769
Surface area
2427729798682086
Volume
8.139048716003E+21
Space diagonal
34840563.992867
Perimeter
60345627
Area
1.752063065986E+14
Altitude
17420281.996433
Surface area
1.752063065986E+14
Volume
9.5919608991557E+20
Height
9482400.4592564