28866224 has 10 divisors (see below), whose sum is σ = 55928340. Its totient is φ = 14433104.

The previous prime is 28866197. The next prime is 28866241. The reversal of 28866224 is 42266882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902054 + ... + 902085.

It is an arithmetic number, because the mean of its divisors is an integer number (5592834).

Almost surely, 2^28866224 is an apocalyptic number.

It is an amenable number.

28866224 is a deficient number, since it is larger than the sum of its proper divisors (27062116).

28866224 is a wasteful number, since it uses less digits than its factorization.

28866224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804147 (or 1804141 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 28866224 is about 5372.7296600518. The cubic root of 28866224 is about 306.7585379019.

The spelling of 28866224 in words is "twenty-eight million, eight hundred sixty-six thousand, two hundred twenty-four".