28708296 has 32 divisors (see below), whose sum is σ = 71903040. Its totient is φ = 9551808.

The previous prime is 28708243. The next prime is 28708313. The reversal of 28708296 is 69280782.

It is a happy number.

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, 22590 + ... + 23826.

It is an arithmetic number, because the mean of its divisors is an integer number (2246970).

Almost surely, 2^28708296 is an apocalyptic number.

It is an amenable number.

28708296 is an abundant number, since it is smaller than the sum of its proper divisors (43194744).

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

28708296 is a wasteful number, since it uses less digits than its factorization.

28708296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2213 (or 2209 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 28708296 is about 5358.0123180150. The cubic root of 28708296 is about 306.1980861052.

The spelling of 28708296 in words is "twenty-eight million, seven hundred eight thousand, two hundred ninety-six".