28704750 has 32 divisors (see below), whose sum is σ = 71648928. Its totient is φ = 7654400.

The previous prime is 28704749. The next prime is 28704769. The reversal of 28704750 is 5740782.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18387 + ... + 19886.

It is an arithmetic number, because the mean of its divisors is an integer number (2239029).

Almost surely, 2^28704750 is an apocalyptic number.

28704750 is an abundant number, since it is smaller than the sum of its proper divisors (42944178).

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

28704750 is a wasteful number, since it uses less digits than its factorization.

28704750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38293 (or 38283 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 28704750 is about 5357.6814015020. The cubic root of 28704750 is about 306.1854785635.

The spelling of 28704750 in words is "twenty-eight million, seven hundred four thousand, seven hundred fifty".