27985844 has 6 divisors (see below), whose sum is σ = 48975234. Its totient is φ = 13992920.

The previous prime is 27985823. The next prime is 27985849. The reversal of 27985844 is 44858972.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23406244 + 4579600 = 4838^2 + 2140^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27985849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3498227 + ... + 3498234.

It is an arithmetic number, because the mean of its divisors is an integer number (8162539).

Almost surely, 2^27985844 is an apocalyptic number.

It is an amenable number.

27985844 is a deficient number, since it is larger than the sum of its proper divisors (20989390).

27985844 is a wasteful number, since it uses less digits than its factorization.

27985844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996465 (or 6996463 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 27985844 is about 5290.1648367513. The cubic root of 27985844 is about 303.6077148070.

The spelling of 27985844 in words is "twenty-seven million, nine hundred eighty-five thousand, eight hundred forty-four".