27945285 has 16 divisors (see below), whose sum is σ = 44790720. Its totient is φ = 14878080.

The previous prime is 27945283. The next prime is 27945317. The reversal of 27945285 is 58254972.

It is not a de Polignac number, because 27945285 - 2¹ = 27945283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27945283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9825 + ... + 12345.

It is an arithmetic number, because the mean of its divisors is an integer number (2799420).

Almost surely, 2^27945285 is an apocalyptic number.

It is an amenable number.

27945285 is a deficient number, since it is larger than the sum of its proper divisors (16845435).

27945285 is a wasteful number, since it uses less digits than its factorization.

27945285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268.

The product of its digits is 201600, while the sum is 42.

The square root of 27945285 is about 5286.3300123999. The cubic root of 27945285 is about 303.4609742040.

The spelling of 27945285 in words is "twenty-seven million, nine hundred forty-five thousand, two hundred eighty-five".