27631988 has 12 divisors (see below), whose sum is σ = 48968640. Its totient is φ = 13640952.

The previous prime is 27631969. The next prime is 27631997. The reversal of 27631988 is 88913672.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 43406 + ... + 44037.

It is an arithmetic number, because the mean of its divisors is an integer number (4080720).

Almost surely, 2^27631988 is an apocalyptic number.

It is an amenable number.

27631988 is a deficient number, since it is larger than the sum of its proper divisors (21336652).

27631988 is a wasteful number, since it uses less digits than its factorization.

27631988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87526 (or 87524 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 27631988 is about 5256.6137389007. The cubic root of 27631988 is about 302.3226672769.

The spelling of 27631988 in words is "twenty-seven million, six hundred thirty-one thousand, nine hundred eighty-eight".