27931328 has 14 divisors (see below), whose sum is σ = 55426356. Its totient is φ = 13965632.

The previous prime is 27931327. The next prime is 27931363. The reversal of 27931328 is 82313972.

It is not an unprimeable number, because it can be changed into a prime (27931327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218150 + ... + 218277.

Almost surely, 2^27931328 is an apocalyptic number.

It is an amenable number.

27931328 is a deficient number, since it is larger than the sum of its proper divisors (27495028).

27931328 is an equidigital number, since it uses as much as digits as its factorization.

27931328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436439 (or 436429 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 27931328 is about 5285.0097445511. The cubic root of 27931328 is about 303.4104455832.

The spelling of 27931328 in words is "twenty-seven million, nine hundred thirty-one thousand, three hundred twenty-eight".