18104 has 16 divisors (see below), whose sum is σ = 35520. Its totient is φ = 8640.

The previous prime is 18097. The next prime is 18119. The reversal of 18104 is 40181.

It is a happy number.

It is a plaindrome in base 11 and base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 18104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212 + ... + 284.

It is an arithmetic number, because the mean of its divisors is an integer number (2220).

2¹⁸¹⁰⁴ is an apocalyptic number.

It is an amenable number.

18104 is a deficient number, since it is larger than the sum of its proper divisors (17416).

18104 is a wasteful number, since it uses less digits than its factorization.

18104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 18104 is about 134.5511055324. The cubic root of 18104 is about 26.2577905826.

Adding to 18104 its reverse (40181), we get a palindrome (58285).

The spelling of 18104 in words is "eighteen thousand, one hundred four".