20198721 is an odd 8-digits composite number following 20198720
and preceding 20198722 . In scientific notation, it is written as 2.0198721 × 10^7.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 13465812 positive integers (up to 20198721) that are relatively prime to 20198721.
20198721 has 4 divisors, whose sum is 26931632
The reverse of 20198721 is 12789102
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 ninety-eight thousand seven hundred twenty-one
Scientific notation
2.0198721 × 10^7
Engineering notation
2.0198721 × 10^6
Prime Factorization
3 × 6732907
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20198721
Product of the distinct prime numbers
The prime factorization of 20198721 is 3 × 6732907.
Since it has a total of 2 prime factors.
7 , 5 , 45 , 92 , 29 , 294 , 1700 , 9329 , 56102 , 65035 , 892724 , 363581 , 3681850 , 9984955 , 90810737 , 83604088 , 639155338 , 275702855 , 512922879 , 4573431869
n×2
40397442
n×3
60596163
n×4
80794884
n×5
100993605
n÷2
10099360.5
n÷3
6732907
n÷3
5049680.25
n÷5
4039744.2
n2
407988330035841
n3
8.2408424496499E+21
n4
1.6645447744543E+29
n5
3.3621675491211E+36
2 √n
4494.298721714
3 √n
272.33782005828
4 √n
67.039531037396
5 √n
28.911110531873
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
-20198720
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 20198721 can be divided by 4 positive divisors.
The sum of these divisors (counting 20198721) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001101000011010101000001
3
Ternary
1102000012102210
4
Quaternary
1031003111001
5
Quinary
20132324341
6
Senary
2000532333
8
Octal
115032501
10
Decimal
20198721
12
Duodecimal
69210a9
16
Hexadecimal
1343541
20
Vigesimal
664gg1
36
Base36
c0xfl
md5
3ce189d14534aaff199b9fcd45127651
sha1
5a75fd17e15b603fe7d34fe64e7ca3afba133988
sha256
02933b1897eb965bd1224bb891d4dca8b3f8a15444128f9818f2474504e2d3c1
sha512
cade076c1af6193e407b7aef37697d333dcee99a988a08ede1dffcbb903e1534c71894a7bd8b3379d50c6ca135f520103519315681df1ad71f76a41ee63df919
ripemd-160
4c21da78dda4555704e76422ac64907676b1e327
Diameter
40397442
Circumference
126912307.01102
Area
1.281733140391E+15
Volume
3.4519160132281E+22
Surface area
5.1269325615639E+15
Circumference
126912307.01102
Perimeter
80794884
Area
407988330035841
Diagonal
28565305.18079
Surface area
2447929980215046
Volume
8.2408424496499E+21
Space diagonal
34985211.019908
Perimeter
60596163
Area
1.7666412912931E+14
Altitude
17492605.509954
Surface area
1.7666412912931E+14
Volume
9.711925964729E+20
Height
9521768.3935967