20181709 is an odd 8-digits composite number following 20181708
and preceding 20181710 . In scientific notation, it is written as 2.0181709 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 19424832 positive integers (up to 20181709) that are relatively prime to 20181709.
20181709 has 8 divisors, whose sum is 20943000
The reverse of 20181709 is 90718102
Previous prime number is 389
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million one hundred eighty-one thousand seven hundred nine
Scientific notation
2.0181709 × 10^7
Engineering notation
2.0181709 × 10^6
Prime Factorization
29 × 389 × 1789
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20181709
Product of the distinct prime numbers
The prime factorization of 20181709 is 29 × 389 × 1789.
Since it has a total of 3 prime factors.
7 , 9 , 76 , 58 , 873 , 110 , 5604 , 1766 , 88146 , 19489 , 57791 , 813368 , 7615961 , 1616900 , 33009901 , 56923301 , 104679679 , 637005919 , 1044018268 , 4946505078
n×2
40363418
n×3
60545127
n×4
80726836
n×5
100908545
n÷2
10090854.5
n÷3
6727236.3333333
n÷3
5045427.25
n÷5
4036341.8
n2
407301378160681
n3
8.2200378893378E+21
n4
1.6589441265159E+29
n5
3.3480327608603E+36
2 √n
4492.4057029614
3 √n
272.26134141568
4 √n
67.025410874991
5 √n
28.906238920526
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
-20181708
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 20181709 can be divided by 8 positive divisors.
The sum of these divisors (counting 20181709) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001100111111001011001101
3
Ternary
1101222100002201
4
Quaternary
1030333023031
5
Quinary
20131303314
6
Senary
2000321501
8
Octal
114771315
10
Decimal
20181709
12
Duodecimal
6913291
16
Hexadecimal
133f2cd
20
Vigesimal
662e59
36
Base36
c0kb1
md5
52e52e7e1a27d9a9670ce3f6cc82b42d
sha1
1a2f857d865dee8beb880c39804255814aee0f7f
sha256
7178353b1b0663f1f1cb4ac4ed7bff6948f9e550665ca558967ab6cd94be0dcf
sha512
c8f25a672bd05f31b969b9dc2d28989abe1db7be88ef98bdbfc6b88a97a1a8ce8440591005c730e118a8df3d84b40f3039ff956a05d98eeb70900e152f03f31f
ripemd-160
89432023bfed9fceb2ae0990e7a54133b7a7264f
Diameter
40363418
Circumference
126805417.46257
Area
1.2795750174266E+15
Volume
3.4432014193831E+22
Surface area
5.1183000697064E+15
Circumference
126805417.46257
Perimeter
80726836
Area
407301378160681
Diagonal
28541246.579667
Surface area
2443808268964086
Volume
8.2200378893378E+21
Space diagonal
34955745.37157
Perimeter
60545127
Area
1.7636667024178E+14
Altitude
17477872.685785
Surface area
1.7636667024178E+14
Volume
9.6874075552685E+20
Height
9513748.8598891