28089752 has 32 divisors (see below), whose sum is σ = 55801200. Its totient is φ = 13219200.

The previous prime is 28089713. The next prime is 28089767. The reversal of 28089752 is 25798082.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 27002 + ... + 28022.

Almost surely, 2^28089752 is an apocalyptic number.

It is an amenable number.

28089752 is a deficient number, since it is larger than the sum of its proper divisors (27711448).

28089752 is a wasteful number, since it uses less digits than its factorization.

28089752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 28089752 is about 5299.9766037219. The cubic root of 28089752 is about 303.9830034357.

The spelling of 28089752 in words is "twenty-eight million, eighty-nine thousand, seven hundred fifty-two".