20123905 is an odd 8-digits composite number following 20123904
and preceding 20123906 . In scientific notation, it is written as 2.0123905 × 10^7.
The sum of its digits is 22. It has a total of 2 prime factors and 4 positive divisors.
There are 16099120 positive integers (up to 20123905) that are relatively prime to 20123905.
20123905 has 4 divisors, whose sum is 24148692
The reverse of 20123905 is 50932102
Previous prime number is 5
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty million one hundred twenty-three thousand nine hundred five
Scientific notation
2.0123905 × 10^7
Engineering notation
2.0123905 × 10^6
Prime Factorization
5 × 4024781
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20123905
Product of the distinct prime numbers
The prime factorization of 20123905 is 5 × 4024781.
Since it has a total of 2 prime factors.
1 , 10 , 62 , 96 , 26 , 484 , 188 , 7861 , 16718 , 4565 , 980679 , 66400 , 1547749 , 8656464 , 35403620 , 91901735 , 599401493 , 908895459 , 1525611332 , 2589455481
n×2
40247810
n×3
60371715
n×4
80495620
n×5
100619525
n÷2
10061952.5
n÷3
6707968.3333333
n÷3
5030976.25
n÷5
4024781
n2
404971552449025
n3
8.1496090491867E+21
n4
1.6400195829297E+29
n5
3.3003598285018E+36
2 √n
4485.9675656429
3 √n
272.00115790309
4 √n
66.977366069762
5 √n
28.889661396508
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
-20123904
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 20123905 can be divided by 4 positive divisors.
The sum of these divisors (counting 20123905) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110001000100000001
3
Ternary
1101212101210211
4
Quaternary
1030301010001
5
Quinary
20122431110
6
Senary
1555154121
8
Octal
114610401
10
Decimal
20123905
12
Duodecimal
68a5941
16
Hexadecimal
1331101
20
Vigesimal
65f9f5
36
Base36
bzbpd
md5
0cc3ed6257185ffa6daa1c6c7721bd5e
sha1
be411eb9461216b583e6a81bcaba717108faf816
sha256
1691192315876c5200437124291efdb78547fece42a3bbda959a4d914ec20a88
sha512
f111c561ca336e726c387c51be1031e562dea708825e73062713701cab2a60d0d202e1d95f63b8c3a1f367f2b92d7447a1722974bf1da9dfbf0bd1d8c0654fb0
ripemd-160
8589faed7740b38ccf35cf486010fd021b26be69
Diameter
40247810
Circumference
126442224.21908
Area
1.2722556540867E+15
Volume
3.4137002558072E+22
Surface area
5.0890226163468E+15
Circumference
126442224.21908
Perimeter
80495620
Area
404971552449025
Diagonal
28459499.378908
Surface area
2429829314694150
Volume
8.1496090491867E+21
Space diagonal
34855625.906689
Perimeter
60371715
Area
1.7535782611544E+14
Altitude
17427812.953345
Surface area
1.7535782611544E+14
Volume
9.6044063711653E+20
Height
9486499.7929692