28075732 has 48 divisors (see below), whose sum is σ = 53932032. Its totient is φ = 12751200.

The previous prime is 28075717. The next prime is 28075753. The reversal of 28075732 is 23757082.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

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 15 ways as a sum of consecutive naturals, for example, 185857 + ... + 186007.

It is an arithmetic number, because the mean of its divisors is an integer number (1123584).

Almost surely, 2^28075732 is an apocalyptic number.

It is an amenable number.

28075732 is a deficient number, since it is larger than the sum of its proper divisors (25856300).

28075732 is a wasteful number, since it uses less digits than its factorization.

28075732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 28075732 is about 5298.6537912945. The cubic root of 28075732 is about 303.9324209201.

The spelling of 28075732 in words is "twenty-eight million, seventy-five thousand, seven hundred thirty-two".