20100991 is an odd 8-digits prime number following 20100990
and preceding 20100992 . In scientific notation, it is written as 2.0100991 × 10^7.
The sum of its digits is 22. It has a total of 1 prime factors and 2 positive divisors.
There are 20100990 positive integers (up to 20100991) that are relatively prime to 20100991.
20100991 has 2 divisors, whose sum is 20100992
The reverse of 20100991 is 19900102
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 22
Digital Root 4
Name
twenty million one hundred thousand nine hundred ninety-one
Scientific notation
2.0100991 × 10^7
Engineering notation
2.0100991 × 10^6
Prime Factorization
20100991
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
20100991
Product of the distinct prime numbers
The prime factorization of 20100991 is 20100991.
Since it has a total of 1 prime factors.
5 , 2 , 23 , 19 , 756 , 877 , 4828 , 2954 , 12343 , 72113 , 89764 , 343231 , 6778867 , 9373013 , 83258112 , 81085744 , 610948763 , 306909480 , 5875378528 , 7593914344
n×2
40201982
n×3
60302973
n×4
80403964
n×5
100504955
n÷2
10050495.5
n÷3
6700330.3333333
n÷3
5025247.75
n÷5
4020198.2
n2
404049839182081
n3
8.1218021809505E+21
n4
1.6325627254307E+29
n5
3.2816128650817E+36
2 √n
4483.4128741395
3 √n
271.89788103548
4 √n
66.958292049152
5 √n
28.883079379642
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
20100992
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
10050496
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4483.4129856617
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999005024
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 20100991 can be divided by 2 positive divisors.
The sum of these divisors (counting 20100991) is 20100992, the average is 10050496.
Base
System
Value
2
Binary
1001100101011011101111111
3
Ternary
1101211020101011
4
Quaternary
1030223131333
5
Quinary
20121212431
6
Senary
1554500051
8
Octal
114533577
10
Decimal
20100991
12
Duodecimal
6894627
16
Hexadecimal
132b77f
20
Vigesimal
65cc9b
36
Base36
byu0v
md5
f1b0ec110d898a12b4d9838bd9a4ef4b
sha1
b8d8b4b38f45a95a242e1af9da50821b5f81b568
sha256
7df9841b6deb60ff55c37929594857eccd5353b049b3c7f557bb572e2c4a912b
sha512
45d12855ffdea71f0c1a7a199fba34009bf150e7f0e13031ad684aaed8452aa4e593ac4a3a1c0cc402b5e3c566e8eb14d7847bc6e201f0d3075d0647a187765d
ripemd-160
4bfa8764ef6e3a241f61d8c5a94cd8699756129b
Diameter
40201982
Circumference
126298251.31095
Area
1.2693600064586E+15
Volume
3.4020525420778E+22
Surface area
5.0774400258343E+15
Circumference
126298251.31095
Perimeter
80403964
Area
404049839182081
Diagonal
28427094.08934
Surface area
2424299035092486
Volume
8.1218021809505E+21
Space diagonal
34815937.694485
Perimeter
60302973
Area
1.7495871256335E+14
Altitude
17407968.847242
Surface area
1.7495871256335E+14
Volume
9.5716356626763E+20
Height
9475698.0297798