27813285 has 24 divisors (see below), whose sum is σ = 48332544. Its totient is φ = 14796000.

The previous prime is 27813281. The next prime is 27813299. The reversal of 27813285 is 58231872.

It is not a de Polignac number, because 27813285 - 2² = 27813281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27813281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33384 + ... + 34206.

It is an arithmetic number, because the mean of its divisors is an integer number (2013856).

Almost surely, 2^27813285 is an apocalyptic number.

It is an amenable number.

27813285 is a deficient number, since it is larger than the sum of its proper divisors (20519259).

27813285 is a wasteful number, since it uses less digits than its factorization.

27813285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1582 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 27813285 is about 5273.8302020448. The cubic root of 27813285 is about 302.9824190041.

The spelling of 27813285 in words is "twenty-seven million, eight hundred thirteen thousand, two hundred eighty-five".