18027115 has 8 divisors (see below), whose sum is σ = 21703968. Its totient is φ = 14374080.

The previous prime is 18027059. The next prime is 18027169. The reversal of 18027115 is 51172081.

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

It is a de Polignac number, because none of the positive numbers 2^k-18027115 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18027115.

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 7 ways as a sum of consecutive naturals, for example, 4242 + ... + 7351.

It is an arithmetic number, because the mean of its divisors is an integer number (2712996).

Almost surely, 2^18027115 is an apocalyptic number.

18027115 is a deficient number, since it is larger than the sum of its proper divisors (3676853).

18027115 is a wasteful number, since it uses less digits than its factorization.

18027115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11909.

The product of its (nonzero) digits is 560, while the sum is 25.

The square root of 18027115 is about 4245.8350179912. The cubic root of 18027115 is about 262.2056685889.

Adding to 18027115 its reverse (51172081), we get a palindrome (69199196).

The spelling of 18027115 in words is "eighteen million, twenty-seven thousand, one hundred fifteen".