27864412 has 24 divisors (see below), whose sum is σ = 52989440. Its totient is φ = 12772080.

The previous prime is 27864391. The next prime is 27864427. The reversal of 27864412 is 21446872.

It is a happy number.

It is a super-2 number, since 2×27864412² = 1552850912211488, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 3558 + ... + 8269.

Almost surely, 2^27864412 is an apocalyptic number.

It is an amenable number.

27864412 is a deficient number, since it is larger than the sum of its proper divisors (25125028).

27864412 is a wasteful number, since it uses less digits than its factorization.

27864412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11881 (or 11879 counting only the distinct ones).

The product of its digits is 21504, while the sum is 34.

The square root of 27864412 is about 5278.6752125889. The cubic root of 27864412 is about 303.1679550421.

The spelling of 27864412 in words is "twenty-seven million, eight hundred sixty-four thousand, four hundred twelve".