28810684 has 12 divisors (see below), whose sum is σ = 57621424. Its totient is φ = 12347424.

The previous prime is 28810667. The next prime is 28810693. The reversal of 28810684 is 48601882.

28810684 is an admirable number.

It is a hoax number, since the sum of its digits (37) 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514449 + ... + 514504.

Almost surely, 2^28810684 is an apocalyptic number.

It is an amenable number.

28810684 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28810684 is a wasteful number, since it uses less digits than its factorization.

28810684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028964 (or 1028962 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 28810684 is about 5367.5584766260. The cubic root of 28810684 is about 306.5616722064.

The spelling of 28810684 in words is "twenty-eight million, eight hundred ten thousand, six hundred eighty-four".