28328376 has 32 divisors (see below), whose sum is σ = 72550800. Its totient is φ = 9212160.

The previous prime is 28328369. The next prime is 28328381. The reversal of 28328376 is 67382382.

It is a happy number.

It is a congruent 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, 13411 + ... + 15378.

Almost surely, 2^28328376 is an apocalyptic number.

It is an amenable number.

28328376 is an abundant number, since it is smaller than the sum of its proper divisors (44222424).

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

28328376 is a wasteful number, since it uses less digits than its factorization.

28328376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28839 (or 28835 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 28328376 is about 5322.4407934706. The cubic root of 28328376 is about 304.8413615586.

The spelling of 28328376 in words is "twenty-eight million, three hundred twenty-eight thousand, three hundred seventy-six".