28473684 has 12 divisors (see below), whose sum is σ = 66438624. Its totient is φ = 9491224.

The previous prime is 28473673. The next prime is 28473713. The reversal of 28473684 is 48637482.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 1186392 + ... + 1186415.

It is an arithmetic number, because the mean of its divisors is an integer number (5536552).

Almost surely, 2^28473684 is an apocalyptic number.

It is an amenable number.

28473684 is an abundant number, since it is smaller than the sum of its proper divisors (37964940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28473684 is a wasteful number, since it uses less digits than its factorization.

28473684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2372814 (or 2372812 counting only the distinct ones).

The product of its digits is 258048, while the sum is 42.

The square root of 28473684 is about 5336.0738375701. The cubic root of 28473684 is about 305.3616922019.

The spelling of 28473684 in words is "twenty-eight million, four hundred seventy-three thousand, six hundred eighty-four".