28754224 has 20 divisors (see below), whose sum is σ = 56898144. Its totient is φ = 14070848.

The previous prime is 28754213. The next prime is 28754233. The reversal of 28754224 is 42245782.

It is a self number, because there is not a number n which added to its sum of digits gives 28754224.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18367 + ... + 19870.

Almost surely, 2^28754224 is an apocalyptic number.

It is an amenable number.

28754224 is a deficient number, since it is larger than the sum of its proper divisors (28143920).

28754224 is a wasteful number, since it uses less digits than its factorization.

28754224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38292 (or 38286 counting only the distinct ones).

The product of its digits is 35840, while the sum is 34.

The square root of 28754224 is about 5362.2965229461. The cubic root of 28754224 is about 306.3612860030.

The spelling of 28754224 in words is "twenty-eight million, seven hundred fifty-four thousand, two hundred twenty-four".