12018516 has 24 divisors (see below), whose sum is σ = 28129920. Its totient is φ = 3993792.

The previous prime is 12018509. The next prime is 12018521. The reversal of 12018516 is 61581021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3040 + ... + 5768.

It is an arithmetic number, because the mean of its divisors is an integer number (1172080).

Almost surely, 2^12018516 is an apocalyptic number.

It is an amenable number.

12018516 is an abundant number, since it is smaller than the sum of its proper divisors (16111404).

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

12018516 is a wasteful number, since it uses less digits than its factorization.

12018516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103 (or 3101 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 12018516 is about 3466.7731393906. The cubic root of 12018516 is about 229.0605409367.

Adding to 12018516 its reverse (61581021), we get a palindrome (73599537).

The spelling of 12018516 in words is "twelve million, eighteen thousand, five hundred sixteen".