20155209 is an odd 8-digits composite number following 20155208
and preceding 20155210 . In scientific notation, it is written as 2.0155209 × 10^7.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 13426080 positive integers (up to 20155209) that are relatively prime to 20155209.
20155209 has 8 divisors, whose sum is 26895072
The reverse of 20155209 is 90255102
Previous prime number is 1993
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty million one hundred fifty-five thousand two hundred nine
Scientific notation
2.0155209 × 10^7
Engineering notation
2.0155209 × 10^6
Prime Factorization
3 × 1993 × 3371
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20155209
Product of the distinct prime numbers
The prime factorization of 20155209 is 3 × 1993 × 3371.
Since it has a total of 3 prime factors.
5 , 9 , 10 , 7 , 404 , 625 , 136 , 9198 , 12750 , 31090 , 803808 , 102845 , 9817637 , 1559678 , 68635308 , 77108575 , 468439840 , 550265416 , 8307566778 , 5112911806
n×2
40310418
n×3
60465627
n×4
80620836
n×5
100776045
n÷2
10077604.5
n÷3
6718403
n÷3
5038802.25
n÷5
4031041.8
n2
406232449833681
n3
8.1876999289799E+21
n4
1.6502480329787E+29
n5
3.3261094006525E+36
2 √n
4489.4553121732
3 √n
272.14212313814
4 √n
67.003397765883
5 √n
28.898643746288
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
-20155208
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 20155209 can be divided by 8 positive divisors.
The sum of these divisors (counting 20155209) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001100111000101101001001
3
Ternary
1101220222202020
4
Quaternary
1030320231021
5
Quinary
20124431314
6
Senary
1555555053
8
Octal
114705511
10
Decimal
20155209
12
Duodecimal
68bba89
16
Hexadecimal
1338b49
20
Vigesimal
65j809
36
Base36
bzzux
md5
714f7f8d1d22e70ff0599eddb35a586d
sha1
1fdfccfa88bb8a98c1ba4552d49e7a400b3b45d8
sha256
7457994ec11ee0a27d0d076be0f45e709fca3e339056aa8d1738c05f5f542c41
sha512
0397a18e5d2b32ca92784ee2cbc1fac44f10e53598305db0e852983fed4bc556210fe83940a47d908df4dd9b6088cb8f3fe9dbe15c771d7d55f74239d8cd5d35
ripemd-160
b73bf8b4f7cda0b02830093e2465371c23a1a5df
Diameter
40310418
Circumference
126638913.05193
Area
1.2762168800473E+15
Volume
3.4296557262241E+22
Surface area
5.1048675201891E+15
Circumference
126638913.05193
Perimeter
80620836
Area
406232449833681
Diagonal
28503769.920264
Surface area
2437394699002086
Volume
8.1876999289799E+21
Space diagonal
34909846.025169
Perimeter
60465627
Area
1.7590381069878E+14
Altitude
17454923.012585
Surface area
1.7590381069878E+14
Volume
9.6492969035038E+20
Height
9501256.6400881