27387856 has 20 divisors (see below), whose sum is σ = 54066852. Its totient is φ = 13435136.

The previous prime is 27387823. The next prime is 27387863. The reversal of 27387856 is 65878372.

It can be written as a sum of positive squares in 2 ways, for example, as 23853456 + 3534400 = 4884^2 + 1880^2 .

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, 15301 + ... + 16996.

Almost surely, 2^27387856 is an apocalyptic number.

It is an amenable number.

27387856 is a deficient number, since it is larger than the sum of its proper divisors (26678996).

27387856 is a wasteful number, since it uses less digits than its factorization.

27387856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32358 (or 32352 counting only the distinct ones).

The product of its digits is 564480, while the sum is 46.

The square root of 27387856 is about 5233.3408067887. The cubic root of 27387856 is about 301.4296796014.

The spelling of 27387856 in words is "twenty-seven million, three hundred eighty-seven thousand, eight hundred fifty-six".