20105685 is an odd 8-digits composite number following 20105684
and preceding 20105686 . In scientific notation, it is written as 2.0105685 × 10^7.
The sum of its digits is 27. It has a total of 3 prime factors and 8 positive divisors.
There are 10722960 positive integers (up to 20105685) that are relatively prime to 20105685.
20105685 has 8 divisors, whose sum is 23829120
The reverse of 20105685 is 58650102
Previous prime number is 15
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 27
Digital Root 9
Name
twenty million one hundred five thousand six hundred eighty-five
Scientific notation
2.0105685 × 10^7
Engineering notation
2.0105685 × 10^6
Prime Factorization
9 × 15 × 148931
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20105685
Product of the distinct prime numbers
The prime factorization of 20105685 is 9 × 15 × 148931.
Since it has a total of 3 prime factors.
9 , 9 , 8 , 14 , 439 , 556 , 8309 , 1044 , 8586 , 70649 , 952022 , 456273 , 8833132 , 3915123 , 96973183 , 47504009 , 17884886 , 488457583 , 4891957706 , 1310349279
n×2
40211370
n×3
60317055
n×4
80422740
n×5
100528425
n÷2
10052842.5
n÷3
6701895
n÷3
5026421.25
n÷5
4021137
n2
404238569319225
n3
8.127493339583E+21
n4
1.6340882092525E+29
n5
3.2854462797446E+36
2 √n
4483.9363287183
3 √n
271.91904399406
4 √n
66.962200745781
5 √n
28.88442821376
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
-20105684
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 20105685 can be divided by 8 positive divisors.
The sum of these divisors (counting 20105685) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001100101100100111010101
3
Ternary
1101211110211000
4
Quaternary
1030230213111
5
Quinary
20121340220
6
Senary
1554533513
8
Octal
114544725
10
Decimal
20105685
12
Duodecimal
6897299
16
Hexadecimal
132c9d5
20
Vigesimal
65d445
36
Base36
byxn9
md5
d95d722d1598de348801cc09298d7f58
sha1
970a4ee9e310f9d31aa1ac002995e70ce16f57fa
sha256
f57701b9ec365030ce3dc46327442438b2963a2c7a2a13d0b4c25c463469ce03
sha512
9998772505535b027724621c2f4bb6a43e0a801572bb2ab02aef755d4706fcd5e09ab637a7cf809cac58820bbf722d488b770bb7d37e1beffcc772590414fad8
ripemd-160
097f6bd0a34f0b0143327d518d36b40cd865984c
Diameter
40211370
Circumference
126327744.58278
Area
1.2699529196709E+15
Volume
3.4044364490312E+22
Surface area
5.0798116786837E+15
Circumference
126327744.58278
Perimeter
80422740
Area
404238569319225
Diagonal
28433732.407801
Surface area
2425431415915350
Volume
8.127493339583E+21
Space diagonal
34824067.940975
Perimeter
60317055
Area
1.7504043510996E+14
Altitude
17412033.970488
Surface area
1.7504043510996E+14
Volume
9.5783427574461E+20
Height
9477910.8026004