20806689 is an odd 8-digits composite number following 20806688
and preceding 20806690 . In scientific notation, it is written as 2.0806689 × 10^7.
The sum of its digits is 39. It has a total of 3 prime factors and 8 positive divisors.
There are 13703840 positive integers (up to 20806689) that are relatively prime to 20806689.
20806689 has 8 divisors, whose sum is 28076832
The reverse of 20806689 is 98660802
Previous prime number is 83
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty million eight hundred six thousand six hundred eighty-nine
Scientific notation
2.0806689 × 10^7
Engineering notation
2.0806689 × 10^6
Prime Factorization
3 × 83 × 83561
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20806689
Product of the distinct prime numbers
The prime factorization of 20806689 is 3 × 83 × 83561.
Since it has a total of 3 prime factors.
1 , 7 , 71 , 85 , 713 , 40 , 8921 , 7984 , 70221 , 46578 , 118537 , 955854 , 935240 , 1061170 , 43748666 , 84828312 , 439687378 , 749342471 , 310940293 , 3337023688
n×2
41613378
n×3
62420067
n×4
83226756
n×5
104033445
n÷2
10403344.5
n÷3
6935563
n÷3
5201672.25
n÷5
4161337.8
n2
432918307142721
n3
9.0075965791251E+21
n4
1.8741826065932E+29
n5
3.8995534624594E+36
2 √n
4561.4349715851
3 √n
275.04325049772
4 √n
67.538396276379
5 √n
29.083093207434
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
-20806688
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 20806689 can be divided by 8 positive divisors.
The sum of these divisors (counting 20806689) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001111010111110000100001
3
Ternary
1110011002102010
4
Quaternary
1033113300201
5
Quinary
20311303224
6
Senary
2021543133
8
Octal
117276041
10
Decimal
20806689
12
Duodecimal
6b74aa9
16
Hexadecimal
13d7c21
20
Vigesimal
6a0ge9
36
Base36
cdyjl
md5
15a128b3c1a5b83c8eb16099945176ec
sha1
8eb3a8159bce27e04c6d4f3d5907f7d5d106947d
sha256
e019c5d60fff28c63f077ecaa72f7accbdf61666968f36815e775b9a2c025938
sha512
c3391ad8f6a94030010611fe6892d022c3f65ed14d3d3dae5fa67892623c06f61b883edab5f87cbe4978afe6425b500868fbb52158260996eb980673ff51c419
ripemd-160
adaba677b940a24586297fe21a7e9aa988961cb3
Diameter
41613378
Circumference
130732282.61586
Area
1.3600529733241E+15
Volume
3.7730932319307E+22
Surface area
5.4402118932964E+15
Circumference
130732282.61586
Perimeter
83226756
Area
432918307142721
Diagonal
29425101.771879
Surface area
2597509842856326
Volume
9.0075965791251E+21
Space diagonal
36038242.485284
Perimeter
62420067
Area
1.8745912587448E+14
Altitude
18019121.242642
Surface area
1.8745912587448E+14
Volume
1.0615554372153E+21
Height
9808367.257293