20145685 is an odd 8-digits composite number following 20145684
and preceding 20145686 . In scientific notation, it is written as 2.0145685 × 10^7.
The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors.
There are 13814160 positive integers (up to 20145685) that are relatively prime to 20145685.
20145685 has 4 divisors, whose sum is 20721312
The reverse of 20145685 is 58654102
Previous prime number is 35
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 31
Digital Root 4
Name
twenty million one hundred forty-five thousand six hundred eighty-five
Scientific notation
2.0145685 × 10^7
Engineering notation
2.0145685 × 10^6
Prime Factorization
35 × 575591
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20145685
Product of the distinct prime numbers
The prime factorization of 20145685 is 35 × 575591.
Since it has a total of 2 prime factors.
3 , 2 , 21 , 57 , 271 , 573 , 519 , 7195 , 90789 , 2254 , 437454 , 698894 , 2892518 , 6624637 , 90033114 , 27257722 , 178280473 , 77343819 , 5808266945 , 3120030390
n×2
40291370
n×3
60437055
n×4
80582740
n×5
100728425
n÷2
10072842.5
n÷3
6715228.3333333
n÷3
5036421.25
n÷5
4029137
n2
405848624119225
n3
8.1760985391893E+21
n4
1.6471310569947E+29
n5
3.3182583427932E+36
2 √n
4488.3944790983
3 √n
272.09925101283
4 √n
66.995481034905
5 √n
28.895912117755
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
-20145684
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 20145685 can be divided by 4 positive divisors.
The sum of these divisors (counting 20145685) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110110011000010101
3
Ternary
1101220111200111
4
Quaternary
1030312120111
5
Quinary
20124130220
6
Senary
1555443021
8
Octal
114663025
10
Decimal
20145685
12
Duodecimal
68b6471
16
Hexadecimal
1336615
20
Vigesimal
65i445
36
Base36
bzsid
md5
47fbce2cf040a65cb3625e3e55b22f2e
sha1
26153ec93129f9e4b22e4af02e4ba636a4c434d3
sha256
873d6d920460ea847c6f31750f5358de0221aefce45c40d76771b1f3f95434fd
sha512
6b140f86cde7682a906b41678b10848ab1aa79521818ce062243e0e7f5a7eb532ac70e3526eb79934e7503008119b055ecd378b6ffbd2564a9f5f46c186ca9fd
ripemd-160
6218f7079c72b9ea0f4745c0d341ac4dcd5fee72
Diameter
40291370
Circumference
126579071.99507
Area
1.2750110560025E+15
Volume
3.4247961474324E+22
Surface area
5.1000442240099E+15
Circumference
126579071.99507
Perimeter
80582740
Area
405848624119225
Diagonal
28490300.950296
Surface area
2435091744715350
Volume
8.1760985391893E+21
Space diagonal
34893349.973278
Perimeter
60437055
Area
1.7573760928911E+14
Altitude
17446674.986639
Surface area
1.7573760928911E+14
Volume
9.635624534517E+20
Height
9496766.9834321