20106991 is an odd 8-digits composite number following 20106990
and preceding 20106992 . In scientific notation, it is written as 2.0106991 × 10^7.
The sum of its digits is 28. It has a total of 2 prime factors and 4 positive divisors.
There are 19232752 positive integers (up to 20106991) that are relatively prime to 20106991.
20106991 has 4 divisors, whose sum is 20981232
The reverse of 20106991 is 19960102
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
twenty million one hundred six thousand nine hundred ninety-one
Scientific notation
2.0106991 × 10^7
Engineering notation
2.0106991 × 10^6
Prime Factorization
23 × 874217
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
20106991
Product of the distinct prime numbers
The prime factorization of 20106991 is 23 × 874217.
Since it has a total of 2 prime factors.
4 , 3 , 15 , 29 , 592 , 131 , 4351 , 1121 , 28669 , 88848 , 222740 , 914722 , 2097508 , 6404532 , 23514158 , 13270421 , 402007652 , 733059765 , 2690033429 , 2615691932
n×2
40213982
n×3
60320973
n×4
80427964
n×5
100534955
n÷2
10053495.5
n÷3
6702330.3333333
n÷3
5026747.75
n÷5
4021398.2
n2
404291087074081
n3
8.1290772491788E+21
n4
1.6345128308754E+29
n5
3.2865134779797E+36
2 √n
4484.0819573242
3 √n
271.92493152591
4 √n
66.963288131066
5 √n
28.88480345174
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
-20106990
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 20106991 can be divided by 4 positive divisors.
The sum of these divisors (counting 20106991) is 1, the average is 0.25.
Base
System
Value
2
Binary
1001100101100111011101111
3
Ternary
1101211112121101
4
Quaternary
1030230323233
5
Quinary
20121410431
6
Senary
1554543531
8
Octal
114547357
10
Decimal
20106991
12
Duodecimal
6897ba7
16
Hexadecimal
132ceef
20
Vigesimal
65d79b
36
Base36
byynj
md5
597df06bebf758c03c3498ec7ef8c69d
sha1
5b624b8055c6b125353cf380c36ab7a053bef3fc
sha256
e90faafe1aaa15bd9857d294b4500db34f85b16bf5d4a54256ae8201a82bc96b
sha512
eaaf1201233934d63790cca5211fa96001f7f3b405fa41f14fcf98db03aef4e3789d977954cfcbe045b892386f5abca8cd559ab207e0c36d671445eb0f4d9b36
ripemd-160
2bd9c03624b8e66aa987ae837c8b4f79ab23bb8c
Diameter
40213982
Circumference
126335950.42279
Area
1.2701179090638E+15
Volume
3.4050999155312E+22
Surface area
5.0804716362551E+15
Circumference
126335950.42279
Perimeter
80427964
Area
404291087074081
Diagonal
28435579.370714
Surface area
2425746522444486
Volume
8.1290772491788E+21
Space diagonal
34826329.99933
Perimeter
60320973
Area
1.7506317596489E+14
Altitude
17413164.999665
Surface area
1.7506317596489E+14
Volume
9.580209412806E+20
Height
9478526.4569046