28704048 has 40 divisors (see below), whose sum is σ = 75882048. Its totient is φ = 9344832.

The previous prime is 28704017. The next prime is 28704061. The reversal of 28704048 is 84040782.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4890 + ... + 9017.

Almost surely, 2^28704048 is an apocalyptic number.

It is an amenable number.

28704048 is an abundant number, since it is smaller than the sum of its proper divisors (47178000).

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

28704048 is a wasteful number, since it uses less digits than its factorization.

28704048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13961 (or 13955 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 28704048 is about 5357.6158876874. The cubic root of 28704048 is about 306.1829825311.

The spelling of 28704048 in words is "twenty-eight million, seven hundred four thousand, forty-eight".