28655284 has 24 divisors (see below), whose sum is σ = 59161088. Its totient is φ = 11884320.

The previous prime is 28655261. The next prime is 28655293. The reversal of 28655284 is 48255682.

It is a super-2 number, since 2×28655284² = 1642250602241312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15639 + ... + 17374.

Almost surely, 2^28655284 is an apocalyptic number.

It is an amenable number.

28655284 is an abundant number, since it is smaller than the sum of its proper divisors (30505804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28655284 is a wasteful number, since it uses less digits than its factorization.

28655284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33055 (or 33053 counting only the distinct ones).

The product of its digits is 153600, while the sum is 40.

The square root of 28655284 is about 5353.0630483864. The cubic root of 28655284 is about 306.0094974767.

The spelling of 28655284 in words is "twenty-eight million, six hundred fifty-five thousand, two hundred eighty-four".