20686857 is an odd 8-digits composite number following 20686856
and preceding 20686858 . In scientific notation, it is written as 2.0686857 × 10^7.
The sum of its digits is 42. It has a total of 2 prime factors and 4 positive divisors.
There are 13791236 positive integers (up to 20686857) that are relatively prime to 20686857.
20686857 has 4 divisors, whose sum is 27582480
The reverse of 20686857 is 75868602
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 42
Digital Root 6
Name
twenty million six hundred eighty-six thousand eight hundred fifty-seven
Scientific notation
2.0686857 × 10^7
Engineering notation
2.0686857 × 10^6
Prime Factorization
3 × 6895619
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20686857
Product of the distinct prime numbers
The prime factorization of 20686857 is 3 × 6895619.
Since it has a total of 2 prime factors.
8 , 6 , 95 , 21 , 860 , 728 , 3557 , 168 , 71316 , 90847 , 943393 , 458651 , 7113897 , 7878827 , 35459961 , 33713466 , 676361430 , 925999383 , 894267499 , 8740249627
n×2
41373714
n×3
62060571
n×4
82747428
n×5
103434285
n÷2
10343428.5
n÷3
6895619
n÷3
5171714.25
n÷5
4137371.4
n2
427946052538449
n3
8.8528587925774E+21
n4
1.8313782388324E+29
n5
3.7885459739638E+36
2 √n
4548.2806641631
3 √n
274.51421454521
4 √n
67.440942046824
5 √n
29.049516103992
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
-20686856
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 20686857 can be divided by 4 positive divisors.
The sum of these divisors (counting 20686857) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001110111010100000001001
3
Ternary
1102221000000220
4
Quaternary
1032322200021
5
Quinary
20243434412
6
Senary
2015220253
8
Octal
116724011
10
Decimal
20686857
12
Duodecimal
6b17689
16
Hexadecimal
13ba809
20
Vigesimal
695h2h
36
Base36
cbe2x
md5
2b35a72ce707e2c81cf84a4bf1a75fb8
sha1
e56eab70c68d8386108cea7ad46405e4231ef78b
sha256
d4f7905d1871d38c451202a7f9b2e19e7ab4e5d590a2e7ba36d190020f0cb7fa
sha512
31fe1630f52b0bfe78bbe19143f10bb3919919c84f256e89b4fd0c21044887d179f448e207907183c1ed4508d446d768a5576e7f78ae883f67bd652a954c952b
ripemd-160
0577febae1e84183762501cc7bd42911affe89f0
Diameter
41373714
Circumference
129979355.95413
Area
1.3444321747875E+15
Volume
3.7082768194705E+22
Surface area
5.3777286991502E+15
Circumference
129979355.95413
Perimeter
82747428
Area
427946052538449
Diagonal
29255633.732273
Surface area
2567676315230694
Volume
8.8528587925774E+21
Space diagonal
35830687.372912
Perimeter
62060571
Area
1.8530607647378E+14
Altitude
17915343.686456
Surface area
1.8530607647378E+14
Volume
1.0433194141864E+21
Height
9751877.9107576