Is 72 a deficient number and what is its deficiency?

Is 72 a deficient number?

Here we will explain and calculate if 72 is a deficient number and its deficiency if applicable.

72 is a deficient number if the sum of its proper divisors is less than 72.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 4 + 6 + 8 + 9 + 12 + 18 + 24 + 36 = 123.

123 is not less than 72. Therefore, 72 is not a deficient number.

The deficiency of 72 is 72 minus the sum of its proper divisors. Thus, the deficiency of 72 is 72 - 123 = No Deficiency

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