244 (two hundred
ndforty-four) is the
natural number
In mathematics, the natural numbers are the numbers 0, 1, 2, 3, and so on, possibly excluding 0. Some start counting with 0, defining the natural numbers as the non-negative integers , while others start with 1, defining them as the positive in ...
following
243 and preceding
245.
Additionally, 244 is:
*the sum of two nonzero
fifth powers ().
*palindromic in bases 3 (100001
3), 11 (202
11), 60 (44
60), 121 (22
121), 243 (11
243).
*a Harshad number in bases 3, 9, 11, 61, 62, 81, 121, 122, 123 and 184.
*the second anti-perfect number, meaning that reversing the digits of the
proper divisors of 244 and adding the results gives 244 back again.
*part of the sequence 1, 2, 4, 8, 61, 221, 244, ... in which each number is formed by reversing the digits of the double of the previous number.
*the
number of non-isomorphic set-systems of weight 8
References
Integers
{{Num-stub