27765988 has 12 divisors (see below), whose sum is σ = 49256620. Its totient is φ = 13692672.

The previous prime is 27765971. The next prime is 27765989. The reversal of 27765988 is 88956772.

It can be written as a sum of positive squares in 2 ways, for example, as 23406244 + 4359744 = 4838^2 + 2088^2 .

It is a super-2 number, since 2×27765988² = 1541900179232288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27765989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47253 + ... + 47836.

Almost surely, 2^27765988 is an apocalyptic number.

It is an amenable number.

27765988 is a deficient number, since it is larger than the sum of its proper divisors (21490632).

27765988 is a wasteful number, since it uses less digits than its factorization.

27765988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95166 (or 95164 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 52.

The square root of 27765988 is about 5269.3441717162. The cubic root of 27765988 is about 302.8105791794.

The spelling of 27765988 in words is "twenty-seven million, seven hundred sixty-five thousand, nine hundred eighty-eight".