282728 has 16 divisors (see below), whose sum is σ = 540000. Its totient is φ = 138736.

The previous prime is 282713. The next prime is 282767. The reversal of 282728 is 827282.

It is a self number, because there is not a number n which added to its sum of digits gives 282728.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 282728.

It is an unprimeable number.

282728 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173 + ... + 771.

It is an arithmetic number, because the mean of its divisors is an integer number (33750).

2²⁸²⁷²⁸ is an apocalyptic number.

It is an amenable number.

282728 is a deficient number, since it is larger than the sum of its proper divisors (257272).

282728 is a wasteful number, since it uses less digits than its factorization.

282728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 664 (or 660 counting only the distinct ones).

The product of its digits is 3584, while the sum is 29.

The square root of 282728 is about 531.7217317357. The cubic root of 282728 is about 65.6331034589.

The spelling of 282728 in words is "two hundred eighty-two thousand, seven hundred twenty-eight".