27966988 has 24 divisors (see below), whose sum is σ = 58367232. Its totient is φ = 11464464.

The previous prime is 27966979. The next prime is 27967013. The reversal of 27966988 is 88966972.

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 7 ways as a sum of consecutive naturals, for example, 21070 + ... + 22357.

It is an arithmetic number, because the mean of its divisors is an integer number (2431968).

Almost surely, 2^27966988 is an apocalyptic number.

27966988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27966988 is an abundant number, since it is smaller than the sum of its proper divisors (30400244).

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

27966988 is a wasteful number, since it uses less digits than its factorization.

27966988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43461 (or 43459 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 27966988 is about 5288.3823613653. The cubic root of 27966988 is about 303.5395123104.

The spelling of 27966988 in words is "twenty-seven million, nine hundred sixty-six thousand, nine hundred eighty-eight".