20020905 is an odd 8-digits composite number following 20020904
and preceding 20020906 . In scientific notation, it is written as 2.0020905 × 10^7.
The sum of its digits is 18. It has a total of 2 prime factors and 4 positive divisors.
There are 10677744 positive integers (up to 20020905) that are relatively prime to 20020905.
20020905 has 4 divisors, whose sum is 20169344
The reverse of 20020905 is 50902002
Previous prime number is 135
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 18
Digital Root 9
Name
twenty million twenty thousand nine hundred five
Scientific notation
2.0020905 × 10^7
Engineering notation
2.0020905 × 10^6
Prime Factorization
135 × 148303
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20020905
Product of the distinct prime numbers
The prime factorization of 20020905 is 135 × 148303.
Since it has a total of 2 prime factors.
6 , 1 , 5 , 38 , 113 , 486 , 4327 , 2044 , 10806 , 52328 , 601526 , 788657 , 6549136 , 8906528 , 28625609 , 50924841 , 504061437 , 258620081 , 2040221065 , 8424666373
n×2
40041810
n×3
60062715
n×4
80083620
n×5
100104525
n÷2
10010452.5
n÷3
6673635
n÷3
5005226.25
n÷5
4004181
n2
400836637019025
n3
8.0251122302774E+21
n4
1.6067000957672E+29
n5
3.2167589980846E+36
2 √n
4474.4725946194
3 √n
271.53630356096
4 √n
66.891498672248
5 √n
28.860027526082
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
-20020904
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 20020905 can be divided by 4 positive divisors.
The sum of these divisors (counting 20020905) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100010111111010101001
3
Ternary
1101200011112000
4
Quaternary
1030113322221
5
Quinary
20111132110
6
Senary
1553041213
8
Octal
114277251
10
Decimal
20020905
12
Duodecimal
6856209
16
Hexadecimal
1317ea9
20
Vigesimal
652c55
36
Base36
bx489
md5
29b37f49102b370dd11185857bc8e259
sha1
3ced9582e2d66600efd9a3f8230bdff1c12acb8f
sha256
faef328f01a7f7348e577c980e9f54c364fb89676554c6298239259f6f71a750
sha512
027b59d808e9c94b2fa231703845ad25000f56e97ffad0c1da6fa0fa3eae2818b2628dbe296e73e50269568a248542f627b29e75f779de9c6c8d75f1c9ad936c
ripemd-160
8e006eaa2ad7e9ca4a5d5f03ddef843185cd4dc4
Diameter
40041810
Circumference
125795056.13244
Area
1.2592654341486E+15
Volume
3.3615511502497E+22
Surface area
5.0370617365944E+15
Circumference
125795056.13244
Perimeter
80083620
Area
400836637019025
Diagonal
28313835.381983
Surface area
2405019822114150
Volume
8.0251122302774E+21
Space diagonal
34677224.67351
Perimeter
60062715
Area
1.73567355213E+14
Altitude
17338612.336755
Surface area
1.73567355213E+14
Volume
9.4576854630204E+20
Height
9437945.1273278