28685486 has 16 divisors (see below), whose sum is σ = 44247168. Its totient is φ = 13939200.

The previous prime is 28685479. The next prime is 28685521. The reversal of 28685486 is 68458682.

It is a self number, because there is not a number n which added to its sum of digits gives 28685486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28451 + ... + 29441.

It is an arithmetic number, because the mean of its divisors is an integer number (2765448).

Almost surely, 2^28685486 is an apocalyptic number.

28685486 is a deficient number, since it is larger than the sum of its proper divisors (15561682).

28685486 is a wasteful number, since it uses less digits than its factorization.

28685486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387.

The product of its digits is 737280, while the sum is 47.

The square root of 28685486 is about 5355.8833071679. The cubic root of 28685486 is about 306.1169686824.

The spelling of 28685486 in words is "twenty-eight million, six hundred eighty-five thousand, four hundred eighty-six".