18108712 has 16 divisors (see below), whose sum is σ = 35049600. Its totient is φ = 8762160.

The previous prime is 18108709. The next prime is 18108721. The reversal of 18108712 is 21780181.

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, 36262 + ... + 36757.

It is an arithmetic number, because the mean of its divisors is an integer number (2190600).

Almost surely, 2^18108712 is an apocalyptic number.

It is an amenable number.

18108712 is a deficient number, since it is larger than the sum of its proper divisors (16940888).

18108712 is a wasteful number, since it uses less digits than its factorization.

18108712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73056 (or 73052 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 18108712 is about 4255.4332329388. The cubic root of 18108712 is about 262.6006845813.

Adding to 18108712 its reverse (21780181), we get a palindrome (39888893).

The spelling of 18108712 in words is "eighteen million, one hundred eight thousand, seven hundred twelve".