Is 154 a deficient number and what is its deficiency?

Is 154 a deficient number?

Here we will explain and calculate if 154 is a deficient number and its deficiency if applicable.

154 is a deficient number if the sum of its proper divisors is less than 154.

The sum of its proper divisors is calculated as follows: 1 + 2 + 7 + 11 + 14 + 22 + 77 = 134.

134 is less than 154. Therefore, 154 is a deficient number.

The deficiency of 154 is 154 minus the sum of its proper divisors. Thus, the deficiency of 154 is 154 - 134 = 20

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