Is 78 a deficient number and what is its deficiency?

Is 78 a deficient number?

Here we will explain and calculate if 78 is a deficient number and its deficiency if applicable.

78 is a deficient number if the sum of its proper divisors is less than 78.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 6 + 13 + 26 + 39 = 90.

90 is not less than 78. Therefore, 78 is not a deficient number.

The deficiency of 78 is 78 minus the sum of its proper divisors. Thus, the deficiency of 78 is 78 - 90 = No Deficiency

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