20199987 is an odd 8-digits composite number following 20199986
and preceding 20199988 . In scientific notation, it is written as 2.0199987 × 10^7.
The sum of its digits is 45. It has a total of 3 prime factors and 8 positive divisors.
There are 13441968 positive integers (up to 20199987) that are relatively prime to 20199987.
20199987 has 8 divisors, whose sum is 22485600
The reverse of 20199987 is 78999102
Previous prime number is 647
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 45
Digital Root 9
Name
twenty million one hundred ninety-nine thousand nine hundred eighty-seven
Scientific notation
2.0199987 × 10^7
Engineering notation
2.0199987 × 10^6
Prime Factorization
9 × 647 × 3469
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20199987
Product of the distinct prime numbers
The prime factorization of 20199987 is 9 × 647 × 3469.
Since it has a total of 3 prime factors.
3 , 10 , 99 , 27 , 905 , 788 , 5803 , 9541 , 73236 , 58310 , 746409 , 54561 , 3036763 , 322946 , 64665214 , 57458991 , 352106479 , 796112487 , 1925791413 , 2246585669
n×2
40399974
n×3
60599961
n×4
80799948
n×5
100999935
n÷2
10099993.5
n÷3
6733329
n÷3
5049996.75
n÷5
4039997.4
n2
408039474800169
n3
8.2423920864502E+21
n4
1.664962129952E+29
n5
3.3632213380522E+36
2 √n
4494.4395646176
3 √n
272.34350973334
4 √n
67.040581475831
5 √n
28.911472936486
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
-20199986
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 20199987 can be divided by 8 positive divisors.
The sum of these divisors (counting 20199987) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101000011101000110011
3
Ternary
1102000021011200
4
Quaternary
1031003220303
5
Quinary
20132344422
6
Senary
2000542243
8
Octal
115035063
10
Decimal
20199987
12
Duodecimal
6921983
16
Hexadecimal
1343a33
20
Vigesimal
664jj7
36
Base36
c0yer
md5
3c40f71c06d48d37f00f75db5be40014
sha1
ccba5f100d7ebd1729129d28fbbf875fada39d80
sha256
fcd3c9366c546dc585574416b4a22ede47483fac641afcdead0c910d0587e0d4
sha512
7dc029c29e18259602be77946d18e8a2a05518d0379cbdfba7af4b13ac8e8a288fc814a1643147bcf1da19e5def187528544bc9a7d9e4e2bd1de16d7e6483153
ripemd-160
a43483f11fe2da8ae407cbddf1d53bfbaa1b3f80
Diameter
40399974
Circumference
126920261.52362
Area
1.2818938164068E+15
Volume
3.4525651235732E+22
Surface area
5.1275752656274E+15
Circumference
126920261.52362
Perimeter
80799948
Area
408039474800169
Diagonal
28567095.57516
Surface area
2448236848801014
Volume
8.2423920864502E+21
Space diagonal
34987403.796231
Perimeter
60599961
Area
1.766862754619E+14
Altitude
17493701.898115
Surface area
1.766862754619E+14
Volume
9.7137522292122E+20
Height
9522365.1917201