28279528 has 16 divisors (see below), whose sum is σ = 54025380. Its totient is φ = 13872768.

The previous prime is 28279519. The next prime is 28279549. The reversal of 28279528 is 82597282.

It can be written as a sum of positive squares in 2 ways, for example, as 26646244 + 1633284 = 5162^2 + 1278^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 32925 + ... + 33772.

Almost surely, 2^28279528 is an apocalyptic number.

It is an amenable number.

28279528 is a deficient number, since it is larger than the sum of its proper divisors (25745852).

28279528 is a wasteful number, since it uses less digits than its factorization.

28279528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66756 (or 66752 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 28279528 is about 5317.8499414707. The cubic root of 28279528 is about 304.6660431421. Note that the first 3 decimals are identical.

The spelling of 28279528 in words is "twenty-eight million, two hundred seventy-nine thousand, five hundred twenty-eight".