18686112 has 24 divisors (see below), whose sum is σ = 49051296. Its totient is φ = 6228672.

The previous prime is 18686093. The next prime is 18686137. The reversal of 18686112 is 21168681.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

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, 97228 + ... + 97419.

It is an arithmetic number, because the mean of its divisors is an integer number (2043804).

Almost surely, 2^18686112 is an apocalyptic number.

18686112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18686112 is an abundant number, since it is smaller than the sum of its proper divisors (30365184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18686112 is a wasteful number, since it uses less digits than its factorization.

18686112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194660 (or 194652 counting only the distinct ones).

The product of its digits is 4608, while the sum is 33.

The square root of 18686112 is about 4322.7435732414. The cubic root of 18686112 is about 265.3625605765.

The spelling of 18686112 in words is "eighteen million, six hundred eighty-six thousand, one hundred twelve".