28442256 has 20 divisors (see below), whose sum is σ = 73475952. Its totient is φ = 9480736.

The previous prime is 28442231. The next prime is 28442273. The reversal of 28442256 is 65224482.

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, 296226 + ... + 296321.

Almost surely, 2^28442256 is an apocalyptic number.

It is an amenable number.

28442256 is an abundant number, since it is smaller than the sum of its proper divisors (45033696).

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

28442256 is a wasteful number, since it uses less digits than its factorization.

28442256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592558 (or 592552 counting only the distinct ones).

The product of its digits is 30720, while the sum is 33.

The square root of 28442256 is about 5333.1281627203. The cubic root of 28442256 is about 305.2493025733.

The spelling of 28442256 in words is "twenty-eight million, four hundred forty-two thousand, two hundred fifty-six".