15018 has 8 divisors (see below), whose sum is σ = 30048. Its totient is φ = 5004.

The previous prime is 15017. The next prime is 15031. The reversal of 15018 is 81051.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

15018 is an admirable number.

It is a Smith number, since the sum of its digits (15) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a plaindrome in base 14 and base 16.

It is a nialpdrome in base 4.

It is a zygodrome in base 5.

It is a junction number, because it is equal to n+sod(n) for n = 14988 and 15006.

It is not an unprimeable number, because it can be changed into a prime (15013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1246 + ... + 1257.

It is an arithmetic number, because the mean of its divisors is an integer number (3756).

2¹⁵⁰¹⁸ is an apocalyptic number.

15018 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15024).

15018 is a wasteful number, since it uses less digits than its factorization.

15018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2508.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 15018 is about 122.5479497993. The cubic root of 15018 is about 24.6719816483.

Adding to 15018 its reverse (81051), we get a palindrome (96069).

The spelling of 15018 in words is "fifteen thousand, eighteen".