28831304 has 16 divisors (see below), whose sum is σ = 55209600. Its totient is φ = 14108752.

The previous prime is 28831301. The next prime is 28831321. The reversal of 28831304 is 40313882.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28831301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37964 + ... + 38715.

It is an arithmetic number, because the mean of its divisors is an integer number (3450600).

Almost surely, 2^28831304 is an apocalyptic number.

It is an amenable number.

28831304 is a deficient number, since it is larger than the sum of its proper divisors (26378296).

28831304 is a wasteful number, since it uses less digits than its factorization.

28831304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76732 (or 76728 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 28831304 is about 5369.4789318890. The cubic root of 28831304 is about 306.6347908477.

The spelling of 28831304 in words is "twenty-eight million, eight hundred thirty-one thousand, three hundred four".