27291312 has 30 divisors (see below), whose sum is σ = 76378172. Its totient is φ = 9097056.

The previous prime is 27291301. The next prime is 27291323. The reversal of 27291312 is 21319272.

It is an interprime number because it is at equal distance from previous prime (27291301) and next prime (27291323).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94618 + ... + 94905.

Almost surely, 2^27291312 is an apocalyptic number.

It is an amenable number.

27291312 is an abundant number, since it is smaller than the sum of its proper divisors (49086860).

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

27291312 is a wasteful number, since it uses less digits than its factorization.

27291312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189537 (or 189528 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 27291312 is about 5224.1087278119. The cubic root of 27291312 is about 301.0750761025.

The spelling of 27291312 in words is "twenty-seven million, two hundred ninety-one thousand, three hundred twelve".