27886987 has 8 divisors (see below), whose sum is σ = 29588976. Its totient is φ = 26191872.

The previous prime is 27886981. The next prime is 27887023. The reversal of 27886987 is 78968872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27886987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27886981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8388 + ... + 11230.

It is an arithmetic number, because the mean of its divisors is an integer number (3698622).

Almost surely, 2^27886987 is an apocalyptic number.

27886987 is a deficient number, since it is larger than the sum of its proper divisors (1701989).

27886987 is a wasteful number, since it uses less digits than its factorization.

27886987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3437.

The product of its digits is 2709504, while the sum is 55.

The square root of 27886987 is about 5280.8131002716. The cubic root of 27886987 is about 303.2498057930.

The spelling of 27886987 in words is "twenty-seven million, eight hundred eighty-six thousand, nine hundred eighty-seven".