27864249 has 8 divisors (see below), whose sum is σ = 42459840. Its totient is φ = 15922416.

The previous prime is 27864227. The next prime is 27864253. The reversal of 27864249 is 94246872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27864249 - 2⁷ = 27864121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27864249.

It is not an unprimeable number, because it can be changed into a prime (27864259) 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 7 ways as a sum of consecutive naturals, for example, 663414 + ... + 663455.

It is an arithmetic number, because the mean of its divisors is an integer number (5307480).

Almost surely, 2^27864249 is an apocalyptic number.

It is an amenable number.

27864249 is a deficient number, since it is larger than the sum of its proper divisors (14595591).

27864249 is a wasteful number, since it uses less digits than its factorization.

27864249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326879.

The product of its digits is 193536, while the sum is 42.

The square root of 27864249 is about 5278.6597730863. The cubic root of 27864249 is about 303.1673638881.

The spelling of 27864249 in words is "twenty-seven million, eight hundred sixty-four thousand, two hundred forty-nine".