28864892 has 12 divisors (see below), whose sum is σ = 57729840. Its totient is φ = 12370656.

The previous prime is 28864867. The next prime is 28864903. The reversal of 28864892 is 29846882.

28864892 is an admirable number.

It is a congruent 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, 515417 + ... + 515472.

It is an arithmetic number, because the mean of its divisors is an integer number (4810820).

Almost surely, 2^28864892 is an apocalyptic number.

It is an amenable number.

28864892 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28864892 is a wasteful number, since it uses less digits than its factorization.

28864892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030900 (or 1030898 counting only the distinct ones).

The product of its digits is 442368, while the sum is 47.

The square root of 28864892 is about 5372.6056992860. The cubic root of 28864892 is about 306.7538194848.

The spelling of 28864892 in words is "twenty-eight million, eight hundred sixty-four thousand, eight hundred ninety-two".