27987264 has 42 divisors (see below), whose sum is σ = 80222090. Its totient is φ = 9328896.

The previous prime is 27987259. The next prime is 27987283. The reversal of 27987264 is 46278972.

It can be written as a sum of positive squares in only one way, i.e., 25401600 + 2585664 = 5040^2 + 1608^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23719 + ... + 24870.

Almost surely, 2^27987264 is an apocalyptic number.

27987264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27987264 is an abundant number, since it is smaller than the sum of its proper divisors (52234826).

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

27987264 is a wasteful number, since it uses less digits than its factorization.

27987264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48607 (or 48594 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 27987264 is about 5290.2990463678. The cubic root of 27987264 is about 303.6128497324.

It can be divided in two parts, 279872 and 64, that added together give a 7-th power (279936 = 6⁷).

The spelling of 27987264 in words is "twenty-seven million, nine hundred eighty-seven thousand, two hundred sixty-four".