27866804 has 12 divisors (see below), whose sum is σ = 55733664. Its totient is φ = 11942904.

The previous prime is 27866743. The next prime is 27866833. The reversal of 27866804 is 40866872.

27866804 is an admirable number.

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 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, 497594 + ... + 497649.

It is an arithmetic number, because the mean of its divisors is an integer number (4644472).

Almost surely, 2^27866804 is an apocalyptic number.

It is an amenable number.

27866804 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.

27866804 is a wasteful number, since it uses less digits than its factorization.

27866804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995254 (or 995252 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 27866804 is about 5278.9017797265. The cubic root of 27866804 is about 303.1766298707.

Adding to 27866804 its sum of digits (41), we get a triangular number (27866845 = T₇₄₆₅).

The spelling of 27866804 in words is "twenty-seven million, eight hundred sixty-six thousand, eight hundred four".