28802288 has 20 divisors (see below), whose sum is σ = 55907880. Its totient is φ = 14374464.

The previous prime is 28802287. The next prime is 28802297. The reversal of 28802288 is 88220882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28802281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9503 + ... + 12161.

It is an arithmetic number, because the mean of its divisors is an integer number (2795394).

Almost surely, 2^28802288 is an apocalyptic number.

It is an amenable number.

28802288 is a deficient number, since it is larger than the sum of its proper divisors (27105592).

28802288 is a wasteful number, since it uses less digits than its factorization.

28802288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3344 (or 3338 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 38.

The square root of 28802288 is about 5366.7763135797. The cubic root of 28802288 is about 306.5318899461.

The spelling of 28802288 in words is "twenty-eight million, eight hundred two thousand, two hundred eighty-eight".