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A perfect number equals the sum of its proper divisors.

A deficient number is greater than the sum of its proper divisors.

An abundant number is less than the sum of its proper divisors.

Proper divisors of a number do not include the number itself.

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Q: What is a perfect Abundant Or dificient number?

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No, 12 is not a perfect number. It is abundant.

deficient

it is perfect i believe the factors are 1,2,4,7,and 14

First of all, to know if a number is abundant, deficient, or perfect, you need to know all the factors of your given number. The factors of 28 are 1,2,4,7,14, and 28. Add your proper factors -or the factors except itself- and determine if the sum of the proper factors is below (deficient), above (abundant), or the exact same amount (perfect). In this case, if you add the proper factors, it equals exactly 28. Because it is exact, it is perfect! =)

A perfect number is one with factors (apart from itself) that sum to give the original number. An abundant number is one where this sum is greater than the original number. A deficient number is one where the sum is less than the original number. The factors of 75 are 1, 3, 5, 15 and 25. The sum of these numbers is 49. Thus 75 is a deficient number.

Related questions

60 is abundant.

No, 12 is not a perfect number. It is abundant.

abundant

abundant

abundant since sum of divisors is 16256

perfect

yes

18 is abundant

It's deficient

No 18 is not. It is a abundant number.

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Yes, this is well known. All integral multiples of any perfect, or abundant number must be an abundant number.