28202288 has 20 divisors (see below), whose sum is σ = 56119920. Its totient is φ = 13719744.

The previous prime is 28202267. The next prime is 28202299. The reversal of 28202288 is 88220282.

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, 23228 + ... + 24411.

It is an arithmetic number, because the mean of its divisors is an integer number (2805996).

Almost surely, 2^28202288 is an apocalyptic number.

It is an amenable number.

28202288 is a deficient number, since it is larger than the sum of its proper divisors (27917632).

28202288 is a wasteful number, since it uses less digits than its factorization.

28202288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47684 (or 47678 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 28202288 is about 5310.5826422343. The cubic root of 28202288 is about 304.3884116523.

The spelling of 28202288 in words is "twenty-eight million, two hundred two thousand, two hundred eighty-eight".