28779704 has 16 divisors (see below), whose sum is σ = 55278720. Its totient is φ = 14038720.

The previous prime is 28779697. The next prime is 28779713. The reversal of 28779704 is 40797782.

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 3 ways as a sum of consecutive naturals, for example, 43544 + ... + 44199.

It is an arithmetic number, because the mean of its divisors is an integer number (3454920).

Almost surely, 2^28779704 is an apocalyptic number.

It is an amenable number.

28779704 is a deficient number, since it is larger than the sum of its proper divisors (26499016).

28779704 is a wasteful number, since it uses less digits than its factorization.

28779704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87790 (or 87786 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 28779704 is about 5364.6718445773. The cubic root of 28779704 is about 306.4517513315.

The spelling of 28779704 in words is "twenty-eight million, seven hundred seventy-nine thousand, seven hundred four".