Question

Which type of number property is 28​

Answer 1

It is a composite number, its proper divisors being 1, 2, 4, 7, and 14.

Answer 2

Answer:

28 is an integer, which is a type of rational number. It has various number properties, including:

Even number: 28 is an even number because it is divisible by 2.

Composite number: 28 is a composite number because it has factors other than 1 and itself. The factors of 28 are 1, 2, 4, 7, 14, and 28.

Abundant number: 28 is an abundant number because the sum of its proper divisors (the divisors other than itself) is greater than 28. The sum of the proper divisors of 28 is 1 + 2 + 4 + 7 + 14 = 28.

Perfect number: 28 is not a perfect number because the sum of its proper divisors is not equal to 28.

Harshad number: 28 is a Harshad number because it is divisible by the sum of its digits. The sum of the digits of 28 is 2 + 8 = 10, and 28 is divisible by 10.

Automorphic number: 28 is not an automorphic number because its square (784) does not end with the digits 28.