27982863 has 12 divisors (see below), whose sum is σ = 41723968. Its totient is φ = 18053280.

The previous prime is 27982859. The next prime is 27982897. The reversal of 27982863 is 36828972.

It is not a de Polignac number, because 27982863 - 2² = 27982859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27982853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49870 + ... + 50427.

Almost surely, 2^27982863 is an apocalyptic number.

27982863 is a deficient number, since it is larger than the sum of its proper divisors (13741105).

27982863 is a wasteful number, since it uses less digits than its factorization.

27982863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100334 (or 100331 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 27982863 is about 5289.8830799934. The cubic root of 27982863 is about 303.5969345147.

The spelling of 27982863 in words is "twenty-seven million, nine hundred eighty-two thousand, eight hundred sixty-three".