18106504 has 16 divisors (see below), whose sum is σ = 36561420. Its totient is φ = 8356800.

The previous prime is 18106499. The next prime is 18106507. The reversal of 18106504 is 40560181.

It can be written as a sum of positive squares in 2 ways, for example, as 16892100 + 1214404 = 4110^2 + 1102^2 .

It is a super-3 number, since 3×18106504³ (a number of 23 digits) contains 333 as substring.

It is a plaindrome in base 16.

It is a zygodrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (18106507) by changing a digit.

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, 86947 + ... + 87154.

Almost surely, 2^18106504 is an apocalyptic number.

It is an amenable number.

18106504 is an abundant number, since it is smaller than the sum of its proper divisors (18454916).

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

18106504 is a wasteful number, since it uses less digits than its factorization.

18106504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174120 (or 174116 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 18106504 is about 4255.1737919855. The cubic root of 18106504 is about 262.5900111574.

Adding to 18106504 its reverse (40560181), we get a palindrome (58666685).

The spelling of 18106504 in words is "eighteen million, one hundred six thousand, five hundred four".