18342684 has 36 divisors (see below), whose sum is σ = 48384336. Its totient is φ = 5848128.

The previous prime is 18342683. The next prime is 18342691. The reversal of 18342684 is 48624381.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18342683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10249 + ... + 11904.

Almost surely, 2^18342684 is an apocalyptic number.

It is an amenable number.

18342684 is an abundant number, since it is smaller than the sum of its proper divisors (30041652).

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

18342684 is a wasteful number, since it uses less digits than its factorization.

18342684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22186 (or 22181 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 18342684 is about 4282.8359763129. The cubic root of 18342684 is about 263.7268179650.

The spelling of 18342684 in words is "eighteen million, three hundred forty-two thousand, six hundred eighty-four".