27288249 has 4 divisors (see below), whose sum is σ = 36384336. Its totient is φ = 18192164.

The previous prime is 27288241. The next prime is 27288263. The reversal of 27288249 is 94288272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27288249 - 2³ = 27288241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27288249.

It is not an unprimeable number, because it can be changed into a prime (27288241) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4548039 + ... + 4548044.

It is an arithmetic number, because the mean of its divisors is an integer number (9096084).

Almost surely, 2^27288249 is an apocalyptic number.

It is an amenable number.

27288249 is a deficient number, since it is larger than the sum of its proper divisors (9096087).

27288249 is an equidigital number, since it uses as much as digits as its factorization.

27288249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9096086.

The product of its digits is 129024, while the sum is 42.

The square root of 27288249 is about 5223.8155595312. The cubic root of 27288249 is about 301.0638121093.

The spelling of 27288249 in words is "twenty-seven million, two hundred eighty-eight thousand, two hundred forty-nine".