27985045 has 16 divisors (see below), whose sum is σ = 37490112. Its totient is φ = 19877760.

The previous prime is 27985037. The next prime is 27985051. The reversal of 27985045 is 54058972.

It is not a de Polignac number, because 27985045 - 2³ = 27985037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27984989 and 27985007.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3552 + ... + 8281.

It is an arithmetic number, because the mean of its divisors is an integer number (2343132).

Almost surely, 2^27985045 is an apocalyptic number.

It is an amenable number.

27985045 is a deficient number, since it is larger than the sum of its proper divisors (9505067).

27985045 is a wasteful number, since it uses less digits than its factorization.

27985045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11892.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 27985045 is about 5290.0893187167. The cubic root of 27985045 is about 303.6048254311.

The spelling of 27985045 in words is "twenty-seven million, nine hundred eighty-five thousand, forty-five".