206721 is an odd 6-digits composite number following 206720
and preceding 206722 . In scientific notation, it is written as 2.06721 × 10^5.
The sum of its digits is 18. It has a total of 3 prime factors and 8 positive divisors.
There are 135864 positive integers (up to 206721) that are relatively prime to 206721.
206721 has 8 divisors, whose sum is 232960
The reverse of 206721 is 127602
Previous prime number is 103
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 18
Digital Root 9
Name
two hundred six thousand seven hundred twenty-one
Scientific notation
2.06721 × 10^5
Engineering notation
2.06721 × 10^3
Prime Factorization
9 × 103 × 223
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
206721
Product of the distinct prime numbers
The prime factorization of 206721 is 9 × 103 × 223.
Since it has a total of 3 prime factors.
3 , 8 , 57 , 25 , 1000 , 877 , 5362 , 8891 , 57168 , 13517 , 846102 , 495655 , 3580913 , 8285915 , 16907435 , 70501171 , 350041145 , 30804944 , 9204583805 , 9273536749
n×2
413442
n×3
620163
n×4
826884
n×5
1033605
n÷2
103360.5
n÷3
68907
n÷3
51680.25
n÷5
41344.2
n2
42733571841
n3
8833926704543361
n4
1.8261581622899E+21
n5
3.7750524146673E+26
2 √n
454.66581133839
3 √n
59.128228245917
4 √n
21.322894065731
5 √n
11.563170234727
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
-206720
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 206721 can be divided by 8 positive divisors.
The sum of these divisors (counting 206721) is 1, the average is 0.125.
Base
System
Value
2
Binary
110010011110000001
3
Ternary
101111120100
4
Quaternary
302132001
5
Quinary
23103341
6
Senary
4233013
8
Octal
623601
10
Decimal
206721
12
Duodecimal
9b769
16
Hexadecimal
32781
20
Vigesimal
15gg1
36
Base36
4fi9
md5
1c4ab12687f58cda59e6ee5d74e7ef70
sha1
cd6baea7ee567a897bb86220b102ff45e45bc9a3
sha256
71d26b8ecd8eb7b0e9187b2a4a1fd0c5fbef37dce7bad99b202080af005ba59e
sha512
982dfe2b803b00610945a82707a6576f24c69100e2efda6645080eb77dd16b6f7ee5f30de5d89fa1ced3ea2d8c57158fd18d38700bc3b3f3c159e718f4487d94
ripemd-160
3dffeeab9b0ad55afe0d3f5a574e154f9232f33d
Diameter
413442
Circumference
1298866.3498855
Area
134251475357.34
Volume
3.7003465649792E+16
Surface area
537005901429.35
Circumference
1298866.3498855
Perimeter
826884
Area
42733571841
Diagonal
292347.64182733
Surface area
256401431046
Volume
8833926704543361
Space diagonal
358051.27499145
Perimeter
620163
Area
18504179404.377
Altitude
179025.63749572
Surface area
18504179404.377
Volume
1.0410882462146E+15
Height
97449.213942443