28502224 has 20 divisors (see below), whose sum is σ = 55558944. Its totient is φ = 14164448.

The previous prime is 28502197. The next prime is 28502231. The reversal of 28502224 is 42220582.

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, 2662 + ... + 8005.

Almost surely, 2^28502224 is an apocalyptic number.

It is an amenable number.

28502224 is a deficient number, since it is larger than the sum of its proper divisors (27056720).

28502224 is a wasteful number, since it uses less digits than its factorization.

28502224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10842 (or 10836 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 28502224 is about 5338.7474186367. The cubic root of 28502224 is about 305.4636824296.

The spelling of 28502224 in words is "twenty-eight million, five hundred two thousand, two hundred twenty-four".