20216991 is an odd 8-digits composite number following 20216990
and preceding 20216992 . In scientific notation, it is written as 2.0216991 × 10^7.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 13043160 positive integers (up to 20216991) that are relatively prime to 20216991.
20216991 has 8 divisors, whose sum is 27825664
The reverse of 20216991 is 19961202
Previous prime number is 31
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 30
Digital Root 3
Name
twenty million two hundred sixteen thousand nine hundred ninety-one
Scientific notation
2.0216991 × 10^7
Engineering notation
2.0216991 × 10^6
Prime Factorization
3 × 31 × 217387
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
20216991
Product of the distinct prime numbers
The prime factorization of 20216991 is 3 × 31 × 217387.
Since it has a total of 3 prime factors.
1 , 1 , 13 , 52 , 236 , 440 , 544 , 3316 , 23705 , 13003 , 276577 , 605838 , 230527 , 3700261 , 57041328 , 85419287 , 921804467 , 969759342 , 9179122716 , 1688832541
n×2
40433982
n×3
60650973
n×4
80867964
n×5
101084955
n÷2
10108495.5
n÷3
6738997
n÷3
5054247.75
n÷5
4043398.2
n2
408726725094081
n3
8.2632245226865E+21
n4
1.6705753580613E+29
n5
3.3774006978748E+36
2 √n
4496.3308374718
3 √n
272.41990632103
4 √n
67.054685425195
5 √n
28.916338734049
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
-20216990
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 20216991 can be divided by 8 positive divisors.
The sum of these divisors (counting 20216991) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001101000111110010011111
3
Ternary
1102001010111110
4
Quaternary
1031013302133
5
Quinary
20133420431
6
Senary
2001153103
8
Octal
115076237
10
Decimal
20216991
12
Duodecimal
692b793
16
Hexadecimal
1347c9f
20
Vigesimal
66729b
36
Base36
c1bj3
md5
1b9286d892a43e6b31538d24dec4de4a
sha1
7256b6866e55313e5a87ae880ed6791cd0da9ddc
sha256
b25cf0111f497c0be3b4917c848143e3c0d39b2144d4c9cd90b3cb1dc78f5ffb
sha512
ba33f3e2ce3e6b8576446de7d53e4624f0816816c5e4f7b9a25b0213f4be63a8ed8d2f159cffa57e318d3e555b4dd3b142c3efa043200149ad754bb29ce374ed
ripemd-160
9db0885c5aaaed6b5b3bea2dd64147f72afea6a6
Diameter
40433982
Circumference
127027100.80658
Area
1.2840528768814E+15
Volume
3.461291394058E+22
Surface area
5.1362115075255E+15
Circumference
127027100.80658
Perimeter
80867964
Area
408726725094081
Diagonal
28591142.862575
Surface area
2452360350564486
Volume
8.2632245226865E+21
Space diagonal
35016855.588163
Perimeter
60650973
Area
1.7698386356855E+14
Altitude
17508427.794081
Surface area
1.7698386356855E+14
Volume
9.7383034907643E+20
Height
9530380.9541916