20198991 is an odd 8-digits composite number following 20198990
and preceding 20198992 . In scientific notation, it is written as 2.0198991 × 10^7.
The sum of its digits is 39. It has a total of 4 prime factors and 16 positive divisors.
There are 12666720 positive integers (up to 20198991) that are relatively prime to 20198991.
20198991 has 16 divisors, whose sum is 28569600
The reverse of 20198991 is 19989102
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 39
Digital Root 3
Name
twenty million one hundred ninety-eight thousand nine hundred ninety-one
Scientific notation
2.0198991 × 10^7
Engineering notation
2.0198991 × 10^6
Prime Factorization
3 × 61 × 23 × 4799
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20198991
Product of the distinct prime numbers
The prime factorization of 20198991 is 3 × 61 × 23 × 4799.
Since it has a total of 4 prime factors.
6 , 8 , 13 , 63 , 850 , 13 , 3899 , 5814 , 15225 , 11030 , 189911 , 547888 , 976391 , 6240346 , 2275036 , 40387223 , 432533723 , 331983870 , 6001547107 , 2533645541
n×2
40397982
n×3
60596973
n×4
80795964
n×5
100994955
n÷2
10099495.5
n÷3
6732997
n÷3
5049747.75
n÷5
4039798.2
n2
407999237418081
n3
8.2411729246147E+21
n4
1.6646337773374E+29
n5
3.3623922686733E+36
2 √n
4494.3287596703
3 √n
272.33903351603
4 √n
67.039755068693
5 √n
28.91118782348
1 , 3 , 23 , 61 , 69 , 183 , 1403 , 4209 , 4799 , 14397 , 110377 , 292739 , 331131 , 878217 , 6732997 , 20198991
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
-20198990
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 20198991 can be divided by 16 positive divisors.
The sum of these divisors (counting 20198991) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001101000011011001001111
3
Ternary
1102000012210210
4
Quaternary
1031003121033
5
Quinary
20132331431
6
Senary
2000533503
8
Octal
115033117
10
Decimal
20198991
12
Duodecimal
6921293
16
Hexadecimal
134364f
20
Vigesimal
664h9b
36
Base36
c0xn3
md5
423badb4bd5d6deb464c80f28c8c93aa
sha1
eaccaaeb0cdb7bc5128ce9738d40ec81aa98ff3e
sha256
4453877c0a8d6fb4b271bab85ae3cb403ebbdf0175040f7554e9e806c81bb5ab
sha512
85d2de43adf1ceaf16b1cf0a15272e5055234236acef731673f3b88c754bd2a79a0568f524dac5fe717e58959adf4b2d3d427286a1e8bb4cfa0f8afc1642e706
ripemd-160
dbab8b327ec9c25758bb1a9938f4316684d2e93e
Diameter
40397982
Circumference
126914003.47105
Area
1.2817674069429E+15
Volume
3.4520544422577E+22
Surface area
5.1270696277715E+15
Circumference
126914003.47105
Perimeter
80795964
Area
407999237418081
Diagonal
28565687.018452
Surface area
2447995424508486
Volume
8.2411729246147E+21
Space diagonal
34985678.673626
Perimeter
60596973
Area
1.7666885216437E+14
Altitude
17492839.336813
Surface area
1.7666885216437E+14
Volume
9.71231543321E+20
Height
9521895.6728174