27993756 has 48 divisors (see below), whose sum is σ = 76676096. Its totient is φ = 7781184.

The previous prime is 27993733. The next prime is 27993773. The reversal of 27993756 is 65739972.

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 15 ways as a sum of consecutive naturals, for example, 1396 + ... + 7611.

Almost surely, 2^27993756 is an apocalyptic number.

It is an amenable number.

27993756 is an abundant number, since it is smaller than the sum of its proper divisors (48682340).

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

27993756 is a wasteful number, since it uses less digits than its factorization.

27993756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9058 (or 9056 counting only the distinct ones).

The product of its digits is 714420, while the sum is 48.

The square root of 27993756 is about 5290.9125866905. The cubic root of 27993756 is about 303.6363235315.

It can be divided in two parts, 2799 and 3756, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 27993756 in words is "twenty-seven million, nine hundred ninety-three thousand, seven hundred fifty-six".