28785704 has 32 divisors (see below), whose sum is σ = 56179200. Its totient is φ = 13815360.

The previous prime is 28785689. The next prime is 28785721. The reversal of 28785704 is 40758782.

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, 22769 + ... + 23999.

It is an arithmetic number, because the mean of its divisors is an integer number (1755600).

Almost surely, 2^28785704 is an apocalyptic number.

It is an amenable number.

28785704 is a deficient number, since it is larger than the sum of its proper divisors (27393496).

28785704 is a wasteful number, since it uses less digits than its factorization.

28785704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353 (or 1349 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 28785704 is about 5365.2310295084. The cubic root of 28785704 is about 306.4730462314.

The spelling of 28785704 in words is "twenty-eight million, seven hundred eighty-five thousand, seven hundred four".