28685450 has 24 divisors (see below), whose sum is σ = 53627520. Its totient is φ = 11415600.

The previous prime is 28685441. The next prime is 28685467. The reversal of 28685450 is 5458682.

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 11 ways as a sum of consecutive naturals, for example, 9191 + ... + 11909.

It is an arithmetic number, because the mean of its divisors is an integer number (2234480).

Almost surely, 2^28685450 is an apocalyptic number.

28685450 is a deficient number, since it is larger than the sum of its proper divisors (24942070).

28685450 is a wasteful number, since it uses less digits than its factorization.

28685450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2942 (or 2937 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 28685450 is about 5355.8799463767. The cubic root of 28685450 is about 306.1168406244.

The spelling of 28685450 in words is "twenty-eight million, six hundred eighty-five thousand, four hundred fifty".