27982556 has 12 divisors (see below), whose sum is σ = 55965168. Its totient is φ = 11992512.

The previous prime is 27982543. The next prime is 27982571. The reversal of 27982556 is 65528972.

27982556 is an admirable number.

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, 499661 + ... + 499716.

It is an arithmetic number, because the mean of its divisors is an integer number (4663764).

Almost surely, 2^27982556 is an apocalyptic number.

It is an amenable number.

27982556 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27982556 is a wasteful number, since it uses less digits than its factorization.

27982556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999388 (or 999386 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 27982556 is about 5289.8540622592. The cubic root of 27982556 is about 303.5958242566.

The spelling of 27982556 in words is "twenty-seven million, nine hundred eighty-two thousand, five hundred fifty-six".