21081804 is an even 8-digits composite number following 21081803
and preceding 21081805 . In scientific notation, it is written as 2.1081804 × 10^7.
The sum of its digits is 24. It has a total of 4 prime factors and 12 positive divisors.
There are 7027264 positive integers (up to 21081804) that are relatively prime to 21081804.
21081804 has 12 divisors, whose sum is 49190904
The reverse of 21081804 is 40818012
Previous prime number is 3
Is Prime? no
Number parity even
Number length 8
Sum of Digits 24
Digital Root 6
Name
twenty-one million eighty-one thousand eight hundred four
Scientific notation
2.1081804 × 10^7
Engineering notation
2.1081804 × 10^6
Prime Factorization
2 × 2 × 3 × 1756817
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
10540902
Product of the distinct prime numbers
The prime factorization of 21081804 is 2 × 2 × 3 × 1756817.
Since it has a total of 4 prime factors.
8 , 2 , 17 , 63 , 555 , 467 , 9043 , 2693 , 49725 , 16240 , 46850 , 863649 , 2007166 , 8060535 , 94603117 , 19016649 , 404323776 , 909485644 , 7565813641 , 5377408408
n×2
42163608
n×3
63245412
n×4
84327216
n×5
105409020
n÷2
10540902
n÷3
7027268
n÷3
5270451
n÷5
4216360.8
n2
444442459894416
n3
9.3696488287719E+21
n4
1.97529100157E+29
n5
4.1642697738062E+36
2 √n
4591.4925677823
3 √n
276.25019321185
4 √n
67.760553183857
5 √n
29.159599466946
1 , 2 , 3 , 4 , 6 , 12 , 1756817 , 3513634 , 5270451 , 7027268 , 10540902 , 21081804
12 divisors
τ
Total Divisors
12
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-21081803
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.083333333333333
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
12
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 21081804 can be divided by 12 positive divisors.
The sum of these divisors (counting 21081804) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1010000011010111011001100
3
Ternary
1110200001210120
4
Quaternary
1100122323030
5
Quinary
20344104204
6
Senary
2031504540
8
Octal
120327314
10
Decimal
21081804
12
Duodecimal
7088150
16
Hexadecimal
141aecc
20
Vigesimal
6bf4a4
36
Base36
cjuto
md5
4f185b30260ac620b28cf4c03c6481b4
sha1
392ed7566995e1c67decb8823f40b7e7648989de
sha256
7ba59c61bac4d893d9ba2f6e9b3a436b6af582aa0d97fa307bd722f407ce01d0
sha512
aa05de35dd62a4bef8452f506db16a4e284aa921213eba23baceedabe5064919426f9cd498bfc565d5e84fa6232d4a9749c5864631f375f9825f50bc7fbe8de9
ripemd-160
a484690baa6dbe6fb406cd9bbcce019ee7fb6270
Diameter
42163608
Circumference
132460881.14164
Area
1.3962571669477E+15
Volume
3.9247493236248E+22
Surface area
5.5850286677907E+15
Circumference
132460881.14164
Perimeter
84327216
Area
444442459894416
Diagonal
29814173.136091
Surface area
2666654759366496
Volume
9.3696488287719E+21
Space diagonal
36514755.643209
Perimeter
63245412
Area
1.9244923039451E+14
Altitude
18257377.821604
Surface area
1.9244923039451E+14
Volume
1.1042237040269E+21
Height
9938057.7120305