20809969 is an odd 8-digits composite number following 20809968
and preceding 20809970 . In scientific notation, it is written as 2.0809969 × 10^7.
The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors.
There are 20722660 positive integers (up to 20809969) that are relatively prime to 20809969.
20809969 has 4 divisors, whose sum is 20897280
The reverse of 20809969 is 96990802
Previous prime number is 239
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
twenty million eight hundred nine thousand nine hundred sixty-nine
Scientific notation
2.0809969 × 10^7
Engineering notation
2.0809969 × 10^6
Prime Factorization
239 × 87071
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20809969
Product of the distinct prime numbers
The prime factorization of 20809969 is 239 × 87071.
Since it has a total of 2 prime factors.
3 , 7 , 21 , 12 , 398 , 291 , 9216 , 9223 , 57584 , 96365 , 68466 , 631456 , 7245790 , 6648368 , 29995717 , 77835023 , 100909232 , 454005395 , 7137515148 , 4900903420
n×2
41619938
n×3
62429907
n×4
83239876
n×5
104049845
n÷2
10404984.5
n÷3
6936656.3333333
n÷3
5202492.25
n÷5
4161993.8
n2
433054809780961
n3
9.0118571668427E+21
n4
1.8753646827442E+29
n5
3.9026280911603E+36
2 √n
4561.7944933984
3 √n
275.05770249215
4 √n
67.541057834464
5 √n
29.084010090761
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
-20809968
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 20809969 can be divided by 4 positive divisors.
The sum of these divisors (counting 20809969) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001111011000100011110001
3
Ternary
1110011020220121
4
Quaternary
1033120203301
5
Quinary
20311404334
6
Senary
2022010241
8
Octal
117304361
10
Decimal
20809969
12
Duodecimal
6b76981
16
Hexadecimal
13d88f1
20
Vigesimal
6a14i9
36
Base36
ce12p
md5
b539a82cf90b07c324dbb43821613cab
sha1
42018f2366f12f02791cfb6c9e83eea0e7416cd9
sha256
5d4626537be42b348a77fdc19792b7dd79a62feb55f11a10de6e318c3b41d6c4
sha512
14d4c5c9ba984eb8cfe1a3367b37868d3e271572656937e85d7f930804de25824ebc831c96ceeadc9e87fe584a41876b0ff748ada4ff23168340c2ca554e50c5
ripemd-160
d41897ca5da3775e8c4f30d676626a9ba4082b9b
Diameter
41619938
Circumference
130752891.46366
Area
1.3604818090096E+15
Volume
3.7748779027405E+22
Surface area
5.4419272360384E+15
Circumference
130752891.46366
Perimeter
83239876
Area
433054809780961
Diagonal
29429740.392364
Surface area
2598328858685766
Volume
9.0118571668427E+21
Space diagonal
36043923.611933
Perimeter
62429907
Area
1.8751823325068E+14
Altitude
18021961.805967
Surface area
1.8751823325068E+14
Volume
1.0620575522932E+21
Height
9809913.4641212