18027836 has 24 divisors (see below), whose sum is σ = 32484144. Its totient is φ = 8749440.

The previous prime is 18027829. The next prime is 18027847. The reversal of 18027836 is 63872081.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18027796 and 18027805.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 48146 + ... + 48518.

It is an arithmetic number, because the mean of its divisors is an integer number (1353506).

Almost surely, 2^18027836 is an apocalyptic number.

It is an amenable number.

18027836 is a deficient number, since it is larger than the sum of its proper divisors (14456308).

18027836 is a wasteful number, since it uses less digits than its factorization.

18027836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 18027836 is about 4245.9199238799. The cubic root of 18027836 is about 262.2091642077.

The spelling of 18027836 in words is "eighteen million, twenty-seven thousand, eight hundred thirty-six".