27983964 has 12 divisors (see below), whose sum is σ = 65295944. Its totient is φ = 9327984.

The previous prime is 27983909. The next prime is 27983981. The reversal of 27983964 is 46938972.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165987 + ... + 1166010.

Almost surely, 2^27983964 is an apocalyptic number.

It is an amenable number.

27983964 is an abundant number, since it is smaller than the sum of its proper divisors (37311980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27983964 is a wasteful number, since it uses less digits than its factorization.

27983964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2332004 (or 2332002 counting only the distinct ones).

The product of its digits is 653184, while the sum is 48.

The square root of 27983964 is about 5289.9871455420. The cubic root of 27983964 is about 303.6009161878.

The spelling of 27983964 in words is "twenty-seven million, nine hundred eighty-three thousand, nine hundred sixty-four".