20451291 is an odd 8-digits composite number following 20451290
and preceding 20451292 . In scientific notation, it is written as 2.0451291 × 10^7.
The sum of its digits is 24. It has a total of 4 prime factors and 16 positive divisors.
There are 11610144 positive integers (up to 20451291) that are relatively prime to 20451291.
20451291 has 16 divisors, whose sum is 31367424
The reverse of 20451291 is 19215402
Previous prime number is 157
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty million four hundred fifty-one thousand two hundred ninety-one
Scientific notation
2.0451291 × 10^7
Engineering notation
2.0451291 × 10^6
Prime Factorization
3 × 7 × 157 × 6203
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
20451291
Product of the distinct prime numbers
The prime factorization of 20451291 is 3 × 7 × 157 × 6203.
Since it has a total of 4 prime factors.
5 , 3 , 29 , 45 , 785 , 201 , 8278 , 1656 , 50897 , 34912 , 637521 , 79488 , 2831215 , 3344262 , 52399291 , 50504591 , 727563193 , 161281755 , 9788347170 , 2143671393
n×2
40902582
n×3
61353873
n×4
81805164
n×5
102256455
n÷2
10225645.5
n÷3
6817097
n÷3
5112822.75
n÷5
4090258.2
n2
418255303566681
n3
8.5538609255355E+21
n4
1.7493749896166E+29
n5
3.577697698077E+36
2 √n
4522.3103608664
3 √n
273.46824871734
4 √n
67.248125333473
5 √n
28.983053978149
1 , 3 , 7 , 21 , 157 , 471 , 1099 , 3297 , 6203 , 18609 , 43421 , 130263 , 973871 , 2921613 , 6817097 , 20451291
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
-20451290
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 20451291 can be divided by 16 positive divisors.
The sum of these divisors (counting 20451291) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1001110000000111111011011
3
Ternary
1102111000220020
4
Quaternary
1032000333123
5
Quinary
20213420131
6
Senary
2010201523
8
Octal
116007733
10
Decimal
20451291
12
Duodecimal
6a232a3
16
Hexadecimal
1380fdb
20
Vigesimal
67g84b
36
Base36
c6cbf
md5
53c554b588d227ec02d9765b6ee13512
sha1
67e273aef0c03d290f0e110fae6c2601183a7508
sha256
9f1e5df485393658d06635423aaddc14ffe35fbeeef75abaa8fba86d53dec113
sha512
bc81df70b8c96dff11b83fb0654058b969633b92a3c9b9b4bd11a188f015412b8445c78b8904993723121a42d8138b01f3300f872aa8f63d02ea7a16d102c8a9
ripemd-160
f08792e0de3ad3c6ed7e188bc59e2bc952f3c5b3
Diameter
40902582
Circumference
128499251.12405
Area
1.3139877890101E+15
Volume
3.5830328857988E+22
Surface area
5.2559511560402E+15
Circumference
128499251.12405
Perimeter
81805164
Area
418255303566681
Diagonal
28922493.100239
Surface area
2509531821400086
Volume
8.5538609255355E+21
Space diagonal
35422675.092376
Perimeter
61353873
Area
1.8110985907816E+14
Altitude
17711337.546188
Surface area
1.8110985907816E+14
Volume
1.0080821776288E+21
Height
9640831.0334129