18027872 has 24 divisors (see below), whose sum is σ = 35595000. Its totient is φ = 8987904.

The previous prime is 18027869. The next prime is 18027881. The reversal of 18027872 is 27872081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15404 + ... + 16532.

It is an arithmetic number, because the mean of its divisors is an integer number (1483125).

Almost surely, 2^18027872 is an apocalyptic number.

It is an amenable number.

18027872 is a deficient number, since it is larger than the sum of its proper divisors (17567128).

18027872 is a wasteful number, since it uses less digits than its factorization.

18027872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1638 (or 1630 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 18027872 is about 4245.9241632417. The cubic root of 18027872 is about 262.2093387437.

The spelling of 18027872 in words is "eighteen million, twenty-seven thousand, eight hundred seventy-two".