12018564 has 48 divisors (see below), whose sum is σ = 32804800. Its totient is φ = 3794688.

The previous prime is 12018553. The next prime is 12018569. The reversal of 12018564 is 46581021.

12018564 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12018569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 877 + ... + 4980.

Almost surely, 2^12018564 is an apocalyptic number.

It is an amenable number.

12018564 is an abundant number, since it is smaller than the sum of its proper divisors (20786236).

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

12018564 is a wasteful number, since it uses less digits than its factorization.

12018564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5889 (or 5881 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12018564 is about 3466.7800622480. The cubic root of 12018564 is about 229.0608458798.

Adding to 12018564 its reverse (46581021), we get a palindrome (58599585).

The spelling of 12018564 in words is "twelve million, eighteen thousand, five hundred sixty-four".