Source: wikibot/practical-number
= Practical number
{wiki=Practical_number}
A practical number is a positive integer \\( n \\) that can be represented as a sum of distinct positive integers not exceeding \\( n \\). In other words, for a number to be practical, any integer up to \\( n \\) can be expressed as a sum of distinct integers chosen from the set of positive integers less than or equal to \\( n \\).