Is 1989 an abundant number and what is its abundance?

Is 1989 an abundant number?

Here we will explain and calculate if 1989 is an abundant number and its abundance if applicable.

1989 is an abundant number if the sum of its proper divisors is greater than 1989.

The sum of its proper divisors is calculated as follows: 1 + 3 + 9 + 13 + 17 + 39 + 51 + 117 + 153 + 221 + 663 = 1287.

1287 is not greater than 1989. Therefore, 1989 is not an abundant number.

The abundance of 1989 is the sum of its proper divisors minus 1989. Thus, the abundance of 1989 is 1287 - 1989 = no abundance

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