27678164 has 12 divisors (see below), whose sum is σ = 49999488. Its totient is φ = 13392600.

The previous prime is 27678163. The next prime is 27678173. The reversal of 27678164 is 46187672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27678163) by changing a digit.

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, 111482 + ... + 111729.

It is an arithmetic number, because the mean of its divisors is an integer number (4166624).

Almost surely, 2^27678164 is an apocalyptic number.

It is an amenable number.

27678164 is a deficient number, since it is larger than the sum of its proper divisors (22321324).

27678164 is a wasteful number, since it uses less digits than its factorization.

27678164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223246 (or 223244 counting only the distinct ones).

The product of its digits is 112896, while the sum is 41.

The square root of 27678164 is about 5261.0040866739. The cubic root of 27678164 is about 302.4909780339.

The spelling of 27678164 in words is "twenty-seven million, six hundred seventy-eight thousand, one hundred sixty-four".