27318385 has 4 divisors (see below), whose sum is σ = 32782068. Its totient is φ = 21854704.

The previous prime is 27318367. The next prime is 27318397. The reversal of 27318385 is 58381372.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15124321 + 12194064 = 3889^2 + 3492^2 .

It is a cyclic number.

It is not a de Polignac number, because 27318385 - 2¹³ = 27310193 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 2731834 + ... + 2731843.

It is an arithmetic number, because the mean of its divisors is an integer number (8195517).

Almost surely, 2^27318385 is an apocalyptic number.

It is an amenable number.

27318385 is a deficient number, since it is larger than the sum of its proper divisors (5463683).

27318385 is an equidigital number, since it uses as much as digits as its factorization.

27318385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5463682.

The product of its digits is 40320, while the sum is 37.

The square root of 27318385 is about 5226.6992452216. The cubic root of 27318385 is about 301.1745987608.

It can be divided in two parts, 273 and 18385, that multiplied together give a palindrome (5019105).

The spelling of 27318385 in words is "twenty-seven million, three hundred eighteen thousand, three hundred eighty-five".