28884272 has 40 divisors (see below), whose sum is σ = 58183776. Its totient is φ = 13879296.

The previous prime is 28884263. The next prime is 28884277. The reversal of 28884272 is 27248882.

It is not an unprimeable number, because it can be changed into a prime (28884277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57173 + ... + 57675.

Almost surely, 2^28884272 is an apocalyptic number.

It is an amenable number.

28884272 is an abundant number, since it is smaller than the sum of its proper divisors (29299504).

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

28884272 is a wasteful number, since it uses less digits than its factorization.

28884272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645 (or 639 counting only the distinct ones).

The product of its digits is 114688, while the sum is 41.

The square root of 28884272 is about 5374.4089907635. The cubic root of 28884272 is about 306.8224560259.

The spelling of 28884272 in words is "twenty-eight million, eight hundred eighty-four thousand, two hundred seventy-two".