18015104 has 48 divisors (see below), whose sum is σ = 38203080. Its totient is φ = 8460288.

The previous prime is 18015091. The next prime is 18015139. The reversal of 18015104 is 40151081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36749 + ... + 37235.

Almost surely, 2^18015104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18015104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19101540).

18015104 is an abundant number, since it is smaller than the sum of its proper divisors (20187976).

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

18015104 is an equidigital number, since it uses as much as digits as its factorization.

18015104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535 (or 506 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 20.

The square root of 18015104 is about 4244.4203373370. The cubic root of 18015104 is about 262.1474220347.

Adding to 18015104 its reverse (40151081), we get a palindrome (58166185).

The spelling of 18015104 in words is "eighteen million, fifteen thousand, one hundred four".