28285268 has 48 divisors (see below), whose sum is σ = 56609280. Its totient is φ = 12249600.

The previous prime is 28285261. The next prime is 28285303. The reversal of 28285268 is 86258282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28285261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121280 + ... + 121512.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^28285268 is an apocalyptic number.

It is an amenable number.

28285268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

28285268 is a wasteful number, since it uses less digits than its factorization.

28285268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 366 counting only the distinct ones).

The product of its digits is 122880, while the sum is 41.

The square root of 28285268 is about 5318.3896058864. The cubic root of 28285268 is about 304.6866548107.

The spelling of 28285268 in words is "twenty-eight million, two hundred eighty-five thousand, two hundred sixty-eight".