A deficient number is a number for which the sum of its positive integer factors (other than itself) is less than itself. The sum of the factors of 18 is 1 + 2 + 3 + 6 + 9 = 21.
Since 21 is greater than 18, 18 is an abundant number.
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18 is abundant
No 16 is deficient.12 and 18 are abundant.
55 is deficient.
NO- 24 is not deficient.
It's deficient