20081487 is an odd 8-digits composite number following 20081486
and preceding 20081488 . In scientific notation, it is written as 2.0081487 × 10^7.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 13387656 positive integers (up to 20081487) that are relatively prime to 20081487.
20081487 has 4 divisors, whose sum is 26775320
The reverse of 20081487 is 78418002
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty million eighty-one thousand four hundred eighty-seven
Scientific notation
2.0081487 × 10^7
Engineering notation
2.0081487 × 10^6
Prime Factorization
3 × 6693829
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20081487
Product of the distinct prime numbers
The prime factorization of 20081487 is 3 × 6693829.
Since it has a total of 2 prime factors.
9 , 10 , 72 , 45 , 900 , 887 , 2056 , 2116 , 62335 , 46658 , 787534 , 246766 , 1114468 , 2085045 , 42012504 , 79021954 , 457520439 , 714099749 , 7535940204 , 5972436681
n×2
40162974
n×3
60244461
n×4
80325948
n×5
100407435
n÷2
10040743.5
n÷3
6693829
n÷3
5020371.75
n÷5
4016297.4
n2
403266120131169
n3
8.0981833489545E+21
n4
1.6262356364565E+29
n5
3.2657229792437E+36
2 √n
4481.237217555
3 √n
271.8099117011
4 √n
66.94204372108
5 √n
28.877472150133
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
-20081486
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 20081487 can be divided by 4 positive divisors.
The sum of these divisors (counting 20081487) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100100110101101001111
3
Ternary
1101210020121210
4
Quaternary
1030212231033
5
Quinary
20120101422
6
Senary
1554225503
8
Octal
114465517
10
Decimal
20081487
12
Duodecimal
6885293
16
Hexadecimal
1326b4f
20
Vigesimal
65a3e7
36
Base36
byez3
md5
86c62e0894de14282e51a564ef961448
sha1
c066087a41ed95e2d28cbb7ae42c35aae4eafaaa
sha256
c758fef79a51cc53c3d46dbe2b69b3b5e7528e1094c8101fb008ba3d139ef233
sha512
bf10c24ba181cbc0414105d0691b76edf0e38b5fa3c2b873e1e80e4457f9a705753074dfe00361c651a551a5165bfd3ca0534db7773303680d972aea89db9854
ripemd-160
3657ada7c8b7f4d647ce63f52efbb4d47223c5b3
Diameter
40162974
Circumference
126175704.06472
Area
1.2668978804457E+15
Volume
3.3921591088665E+22
Surface area
5.067591521783E+15
Circumference
126175704.06472
Perimeter
80325948
Area
403266120131169
Diagonal
28399511.268019
Surface area
2419596720787014
Volume
8.0981833489545E+21
Space diagonal
34782155.775534
Perimeter
60244461
Area
1.7461935225959E+14
Altitude
17391077.887767
Surface area
1.7461935225959E+14
Volume
9.5438006022295E+20
Height
9466503.7560063