27982864 has 40 divisors (see below), whose sum is σ = 66731840. Its totient is φ = 11069568.

The previous prime is 27982859. The next prime is 27982897. The reversal of 27982864 is 46828972.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8154 + ... + 11065.

It is an arithmetic number, because the mean of its divisors is an integer number (1668296).

Almost surely, 2^27982864 is an apocalyptic number.

It is an amenable number.

27982864 is an abundant number, since it is smaller than the sum of its proper divisors (38748976).

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

27982864 is a wasteful number, since it uses less digits than its factorization.

27982864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19247 (or 19241 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 27982864 is about 5289.8831745134. The cubic root of 27982864 is about 303.5969381312.

The spelling of 27982864 in words is "twenty-seven million, nine hundred eighty-two thousand, eight hundred sixty-four".