27988366 has 16 divisors (see below), whose sum is σ = 48422880. Its totient is φ = 11884320.

The previous prime is 27988343. The next prime is 27988397. The reversal of 27988366 is 66388972.

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, 7645 + ... + 10696.

It is an arithmetic number, because the mean of its divisors is an integer number (3026430).

Almost surely, 2^27988366 is an apocalyptic number.

27988366 is a deficient number, since it is larger than the sum of its proper divisors (20434514).

27988366 is a wasteful number, since it uses less digits than its factorization.

27988366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18459.

The product of its digits is 870912, while the sum is 49.

The square root of 27988366 is about 5290.4031982449. The cubic root of 27988366 is about 303.6168346041.

The spelling of 27988366 in words is "twenty-seven million, nine hundred eighty-eight thousand, three hundred sixty-six".