20512005 is an odd 8-digits composite number following 20512004
and preceding 20512006 . In scientific notation, it is written as 2.0512005 × 10^7.
The sum of its digits is 15. It has a total of 4 prime factors and 16 positive divisors.
There are 10902080 positive integers (up to 20512005) that are relatively prime to 20512005.
20512005 has 16 divisors, whose sum is 32932224
The reverse of 20512005 is 50021502
Previous prime number is 311
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 15
Digital Root 6
Name
twenty million five hundred twelve thousand five
Scientific notation
2.0512005 × 10^7
Engineering notation
2.0512005 × 10^6
Prime Factorization
3 × 5 × 311 × 4397
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20512005
Product of the distinct prime numbers
The prime factorization of 20512005 is 3 × 5 × 311 × 4397.
Since it has a total of 4 prime factors.
7 , 4 , 75 , 52 , 581 , 558 , 5070 , 2554 , 46363 , 84168 , 884412 , 704642 , 3478712 , 3184094 , 29617990 , 53905824 , 193805228 , 990211147 , 8899010768 , 2281698177
n×2
41024010
n×3
61536015
n×4
82048020
n×5
102560025
n÷2
10256002.5
n÷3
6837335
n÷3
5128001.25
n÷5
4102401
n2
420742349120025
n3
8.6302691688617E+21
n4
1.7702412434304E+29
n5
3.631119723645E+36
2 √n
4529.0181055059
3 √n
273.73859755263
4 √n
67.297979951154
5 √n
29.000242049683
1 , 3 , 5 , 15 , 311 , 933 , 1555 , 4397 , 4665 , 13191 , 21985 , 65955 , 1367467 , 4102401 , 6837335 , 20512005
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-20512004
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20512005 can be divided by 16 positive divisors.
The sum of these divisors (counting 20512005) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001110001111110100000101
3
Ternary
1102121010011220
4
Quaternary
1032033310011
5
Quinary
20222341010
6
Senary
2011350553
8
Octal
116176405
10
Decimal
20512005
12
Duodecimal
6a52459
16
Hexadecimal
138fd05
20
Vigesimal
684005
36
Base36
c7n5x
md5
011e511040899e5a5d762997c6618d21
sha1
5b81b5e79ffc71dae1a4801b8f3f862dad134acb
sha256
4ca29e0395ead9f0ed6a29be6b7d8a68840cf3aea84089714e077c7032df4ee2
sha512
58c401b22c8a6dec0de6e113c55bd6a051f7a30aecf74dd9a58a5e747bb71b0e5f85056437309d300571ab3d7e693137be6cca7f635baca59cbe91376dc709a7
ripemd-160
027cc3b306b7d432c20512352452ef042c1ccc05
Diameter
41024010
Circumference
128880728.43679
Area
1.3218010730496E+15
Volume
3.6150386959198E+22
Surface area
5.2872042921983E+15
Circumference
128880728.43679
Perimeter
82048020
Area
420742349120025
Diagonal
29008355.662465
Surface area
2524454094720150
Volume
8.6302691688617E+21
Space diagonal
35527834.825107
Perimeter
61536015
Area
1.8218678139294E+14
Altitude
17763917.412553
Surface area
1.8218678139294E+14
Volume
1.0170869754612E+21
Height
9669451.8874882