18000342 has 24 divisors (see below), whose sum is σ = 39832416. Its totient is φ = 5872176.

The previous prime is 18000319. The next prime is 18000343. The reversal of 18000342 is 24300081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18000343) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9793 + ... + 11484.

It is an arithmetic number, because the mean of its divisors is an integer number (1659684).

Almost surely, 2^18000342 is an apocalyptic number.

18000342 is an abundant number, since it is smaller than the sum of its proper divisors (21832074).

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

18000342 is a wasteful number, since it uses less digits than its factorization.

18000342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21332 (or 21329 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 18000342 is about 4242.6809920144. The cubic root of 18000342 is about 262.0757992133.

The spelling of 18000342 in words is "eighteen million, three hundred forty-two", and thus it is an aban number.