28584288 has 36 divisors (see below), whose sum is σ = 81287388. Its totient is φ = 9528000.

The previous prime is 28584253. The next prime is 28584289. The reversal of 28584288 is 88248582.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28584289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 49338 + ... + 49913.

It is an arithmetic number, because the mean of its divisors is an integer number (2257983).

Almost surely, 2^28584288 is an apocalyptic number.

It is an amenable number.

28584288 is an abundant number, since it is smaller than the sum of its proper divisors (52703100).

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

28584288 is a wasteful number, since it uses less digits than its factorization.

28584288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99267 (or 99256 counting only the distinct ones).

The product of its digits is 327680, while the sum is 45.

The square root of 28584288 is about 5346.4275923274. The cubic root of 28584288 is about 305.7565666123.

The spelling of 28584288 in words is "twenty-eight million, five hundred eighty-four thousand, two hundred eighty-eight".