27691964 has 12 divisors (see below), whose sum is σ = 48607104. Its totient is φ = 13804224.

The previous prime is 27691927. The next prime is 27691973. The reversal of 27691964 is 46919672.

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, 8924 + ... + 11619.

It is an arithmetic number, because the mean of its divisors is an integer number (4050592).

Almost surely, 2^27691964 is an apocalyptic number.

It is an amenable number.

27691964 is a deficient number, since it is larger than the sum of its proper divisors (20915140).

27691964 is a wasteful number, since it uses less digits than its factorization.

27691964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20884 (or 20882 counting only the distinct ones).

The product of its digits is 163296, while the sum is 44.

The square root of 27691964 is about 5262.3154599473. The cubic root of 27691964 is about 302.5412424701.

The spelling of 27691964 in words is "twenty-seven million, six hundred ninety-one thousand, nine hundred sixty-four".