28288088 has 16 divisors (see below), whose sum is σ = 53105280. Its totient is φ = 14126688.

The previous prime is 28288087. The next prime is 28288121. The reversal of 28288088 is 88088282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28288087) 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 3 ways as a sum of consecutive naturals, for example, 7070 + ... + 10322.

It is an arithmetic number, because the mean of its divisors is an integer number (3319080).

Almost surely, 2^28288088 is an apocalyptic number.

It is an amenable number.

28288088 is a deficient number, since it is larger than the sum of its proper divisors (24817192).

28288088 is a wasteful number, since it uses less digits than its factorization.

28288088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4346 (or 4342 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 44.

The square root of 28288088 is about 5318.6547171254. The cubic root of 28288088 is about 304.6967800794.

The spelling of 28288088 in words is "twenty-eight million, two hundred eighty-eight thousand, eighty-eight".