206809 is an odd 6-digits composite number following 206808
and preceding 206810 . In scientific notation, it is written as 2.06809 × 10^5.
The sum of its digits is 25. It has a total of 2 prime factors and 4 positive divisors.
There are 203904 positive integers (up to 206809) that are relatively prime to 206809.
206809 has 4 divisors, whose sum is 209716
The reverse of 206809 is 908602
Previous prime number is 73
Is Prime? no
Number parity odd
Number length 6
Sum of Digits 25
Digital Root 7
Name
two hundred six thousand eight hundred nine
Scientific notation
2.06809 × 10^5
Engineering notation
2.06809 × 10^3
Prime Factorization
73 × 2833
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
206809
Product of the distinct prime numbers
The prime factorization of 206809 is 73 × 2833.
Since it has a total of 2 prime factors.
4 , 9 , 51 , 77 , 967 , 248 , 1343 , 8846 , 70283 , 2149 , 53465 , 21574 , 9423720 , 58701 , 24873452 , 76483466 , 639532303 , 256327108 , 8854077545 , 7339488935
n×2
413618
n×3
620427
n×4
827236
n×5
1034045
n÷2
103404.5
n÷3
68936.333333333
n÷3
51702.25
n÷5
41361.8
n2
42769962481
n3
8845213170733129
n4
1.8292696906261E+21
n5
3.783094354487E+26
2 √n
454.76257541711
3 √n
59.136617243525
4 √n
21.325162963436
5 √n
11.564154542811
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
-206808
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 206809 can be divided by 4 positive divisors.
The sum of these divisors (counting 206809) is 1, the average is 0.25.
Base
System
Value
2
Binary
110010011111011001
3
Ternary
101111200121
4
Quaternary
302133121
5
Quinary
23104214
6
Senary
4233241
8
Octal
623731
10
Decimal
206809
12
Duodecimal
9b821
16
Hexadecimal
327d9
20
Vigesimal
15h09
36
Base36
4fkp
md5
44bcaf339c1153065b52fa3ab5f621a5
sha1
454af4c5005b98ff3777061c888aa869e06bba88
sha256
85de679204f6c03eeb4d2cb5d36298a35370c49ecc5a8ee0b3a034b7d786282e
sha512
6fdece3351ac145344bcd3a3501a5b0f00671073da739370c021b9da21865c4700e89b1718481d04fba73ef4600517adbf28817c95eea6f5c5b6f05fc1dbcb9a
ripemd-160
af0aec4e00673d42ffde2fbf54e9a8815635a551
Diameter
413618
Circumference
1299419.2701925
Area
134365799924.62
Volume
3.7050742288815E+16
Surface area
537463199698.48
Circumference
1299419.2701925
Perimeter
827236
Area
42769962481
Diagonal
292472.09262082
Surface area
256619774886
Volume
8845213170733129
Space diagonal
358203.69546251
Perimeter
620427
Area
18519937013.727
Altitude
179101.84773126
Surface area
18519937013.727
Volume
1.042418369011E+15
Height
97490.697540272