28889268 has 24 divisors (see below), whose sum is σ = 67542720. Its totient is φ = 9610560.

The previous prime is 28889233. The next prime is 28889281. The reversal of 28889268 is 86298882.

It is a self number, because there is not a number n which added to its sum of digits gives 28889268.

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, 4713 + ... + 8943.

It is an arithmetic number, because the mean of its divisors is an integer number (2814280).

Almost surely, 2^28889268 is an apocalyptic number.

It is an amenable number.

28889268 is an abundant number, since it is smaller than the sum of its proper divisors (38653452).

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

28889268 is a wasteful number, since it uses less digits than its factorization.

28889268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4807 (or 4805 counting only the distinct ones).

The product of its digits is 884736, while the sum is 51.

The square root of 28889268 is about 5374.8737659595. The cubic root of 28889268 is about 306.8401449677.

The spelling of 28889268 in words is "twenty-eight million, eight hundred eighty-nine thousand, two hundred sixty-eight".