Is 628 a deficient number and what is its deficiency?

Is 628 a deficient number?

Here we will explain and calculate if 628 is a deficient number and its deficiency if applicable.

628 is a deficient number if the sum of its proper divisors is less than 628.

The sum of its proper divisors is calculated as follows: 1 + 2 + 4 + 157 + 314 = 478.

478 is less than 628. Therefore, 628 is a deficient number.

The deficiency of 628 is 628 minus the sum of its proper divisors. Thus, the deficiency of 628 is 628 - 478 = 150

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