28284328 has 16 divisors (see below), whose sum is σ = 56152980. Its totient is φ = 13310208.

The previous prime is 28284313. The next prime is 28284349. The reversal of 28284328 is 82348282.

It can be written as a sum of positive squares in 2 ways, for example, as 26440164 + 1844164 = 5142^2 + 1358^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103851 + ... + 104122.

Almost surely, 2^28284328 is an apocalyptic number.

It is an amenable number.

28284328 is a deficient number, since it is larger than the sum of its proper divisors (27868652).

28284328 is a wasteful number, since it uses less digits than its factorization.

28284328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207996 (or 207992 counting only the distinct ones).

The product of its digits is 49152, while the sum is 37.

The square root of 28284328 is about 5318.3012325366. The cubic root of 28284328 is about 304.6832795716.

The spelling of 28284328 in words is "twenty-eight million, two hundred eighty-four thousand, three hundred twenty-eight".