28442284 has 12 divisors (see below), whose sum is σ = 53602864. Its totient is φ = 13127184.

The previous prime is 28442279. The next prime is 28442299. The reversal of 28442284 is 48224482.

It is a happy number.

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, 273432 + ... + 273535.

Almost surely, 2^28442284 is an apocalyptic number.

It is an amenable number.

28442284 is a deficient number, since it is larger than the sum of its proper divisors (25160580).

28442284 is a wasteful number, since it uses less digits than its factorization.

28442284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546984 (or 546982 counting only the distinct ones).

The product of its digits is 32768, while the sum is 34.

The square root of 28442284 is about 5333.1307878206. The cubic root of 28442284 is about 305.2494027409.

The spelling of 28442284 in words is "twenty-eight million, four hundred forty-two thousand, two hundred eighty-four".