27985803 has 12 divisors (see below), whose sum is σ = 39383208. Its totient is φ = 17674560.

The previous prime is 27985759. The next prime is 27985807. The reversal of 27985803 is 30858972.

It is not a de Polignac number, because 27985803 - 2⁸ = 27985547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27985807) 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 in 11 ways as a sum of consecutive naturals, for example, 11838 + ... + 14003.

It is an arithmetic number, because the mean of its divisors is an integer number (3281934).

Almost surely, 2^27985803 is an apocalyptic number.

27985803 is a deficient number, since it is larger than the sum of its proper divisors (11397405).

27985803 is a wasteful number, since it uses less digits than its factorization.

27985803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25882 (or 25863 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 27985803 is about 5290.1609616343. The cubic root of 27985803 is about 303.6075665425.

The spelling of 27985803 in words is "twenty-seven million, nine hundred eighty-five thousand, eight hundred three".