12018436 has 12 divisors (see below), whose sum is σ = 21102928. Its totient is φ = 5989032.

The previous prime is 12018401. The next prime is 12018437. The reversal of 12018436 is 63481021.

It is a self number, because there is not a number n which added to its sum of digits gives 12018436.

It is not an unprimeable number, because it can be changed into a prime (12018437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3666 + ... + 6121.

Almost surely, 2^12018436 is an apocalyptic number.

It is an amenable number.

12018436 is a deficient number, since it is larger than the sum of its proper divisors (9084492).

12018436 is a wasteful number, since it uses less digits than its factorization.

12018436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10098 (or 10096 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 12018436 is about 3466.7616012642. The cubic root of 12018436 is about 229.0600326963.

Adding to 12018436 its reverse (63481021), we get a palindrome (75499457).

The spelling of 12018436 in words is "twelve million, eighteen thousand, four hundred thirty-six".