20130987 is an odd 8-digits composite number following 20130986
and preceding 20130988 . In scientific notation, it is written as 2.0130987 × 10^7.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 13420656 positive integers (up to 20130987) that are relatively prime to 20130987.
20130987 has 4 divisors, whose sum is 26841320
The reverse of 20130987 is 78903102
Previous prime number is 3
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty million one hundred thirty thousand nine hundred eighty-seven
Scientific notation
2.0130987 × 10^7
Engineering notation
2.0130987 × 10^6
Prime Factorization
3 × 6710329
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20130987
Product of the distinct prime numbers
The prime factorization of 20130987 is 3 × 6710329.
Since it has a total of 2 prime factors.
6 , 9 , 82 , 1 , 969 , 211 , 2793 , 4882 , 97873 , 11497 , 230961 , 702368 , 3581969 , 806242 , 11458948 , 12183946 , 510654021 , 803921845 , 7639370919 , 3538798089
n×2
40261974
n×3
60392961
n×4
80523948
n×5
100654935
n÷2
10065493.5
n÷3
6710329
n÷3
5032746.75
n÷5
4026197.4
n2
405256637594169
n3
8.1582161030719E+21
n4
1.6423294231413E+29
n5
3.3061712266975E+36
2 √n
4486.7568465429
3 √n
272.03306168908
4 √n
66.983257957067
5 √n
28.891694478929
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
-20130986
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 20130987 can be divided by 4 positive divisors.
The sum of these divisors (counting 20130987) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100110010110010101011
3
Ternary
1101212202112010
4
Quaternary
1030302302223
5
Quinary
20123142422
6
Senary
1555251003
8
Octal
114626253
10
Decimal
20130987
12
Duodecimal
68a9a63
16
Hexadecimal
1332cab
20
Vigesimal
65g797
36
Base36
bzh63
md5
08dfc48a764b7c5ecaa56858989bb62b
sha1
25d60cc7cf754eb02d389b218d8838aa92bfb4ea
sha256
c0aea004e23df04849cefa7aa0f44dcfea6cea1c472b899703f83d02922fbb27
sha512
1569a99852604966aaa663e1fd48755aaadf182f29a7eba8c364b646d7dac816c9cb9f0a9f5b7a1fbc81d2167e3323ddfea25f4793f345d69373267fade0060a
ripemd-160
0258b0e360d97377fe45c7ac5d393c393d64513d
Diameter
40261974
Circumference
126486721.73742
Area
1.2731512754843E+15
Volume
3.4173055701078E+22
Surface area
5.0926051019374E+15
Circumference
126486721.73742
Perimeter
80523948
Area
405256637594169
Diagonal
28469514.839356
Surface area
2431539825565014
Volume
8.1582161030719E+21
Space diagonal
34867892.290509
Perimeter
60392961
Area
1.7548127160441E+14
Altitude
17433946.145254
Surface area
1.7548127160441E+14
Volume
9.6145498814457E+20
Height
9489838.2797855