Is 1380 a deficient number and what is its deficiency?

Is 1380 a deficient number?

Here we will explain and calculate if 1380 is a deficient number and its deficiency if applicable.

1380 is a deficient number if the sum of its proper divisors is less than 1380.

The sum of its proper divisors is calculated as follows: 1 + 2 + 3 + 4 + 5 + 6 + 10 + 12 + 15 + 20 + 23 + 30 + 46 + 60 + 69 + 92 + 115 + 138 + 230 + 276 + 345 + 460 + 690 = 2652.

2652 is not less than 1380. Therefore, 1380 is not a deficient number.

The deficiency of 1380 is 1380 minus the sum of its proper divisors. Thus, the deficiency of 1380 is 1380 - 2652 = No Deficiency

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