28490684 has 12 divisors (see below), whose sum is σ = 49920024. Its totient is φ = 14227824.

The previous prime is 28490677. The next prime is 28490699. The reversal of 28490684 is 48609482.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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, 299 + ... + 7554.

It is an arithmetic number, because the mean of its divisors is an integer number (4160002).

Almost surely, 2^28490684 is an apocalyptic number.

It is an amenable number.

28490684 is a deficient number, since it is larger than the sum of its proper divisors (21429340).

28490684 is a wasteful number, since it uses less digits than its factorization.

28490684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8764 (or 8762 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 28490684 is about 5337.6665313599. Note that the first 3 decimals coincide. The cubic root of 28490684 is about 305.4224514161.

The spelling of 28490684 in words is "twenty-eight million, four hundred ninety thousand, six hundred eighty-four".