12518436 has 48 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 3524640.

The previous prime is 12518423. The next prime is 12518447. The reversal of 12518436 is 63481521.

It is a super-2 number, since 2×12518436² = 313422479772192, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4915 + ... + 7013.

It is an arithmetic number, because the mean of its divisors is an integer number (705600).

Almost surely, 2^12518436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12518436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16934400).

12518436 is an abundant number, since it is smaller than the sum of its proper divisors (21350364).

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

12518436 is a wasteful number, since it uses less digits than its factorization.

12518436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184 (or 2182 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 12518436 is about 3538.1401894216. The cubic root of 12518436 is about 232.1934820760.

Adding to 12518436 its reverse (63481521), we get a palindrome (75999957).

The spelling of 12518436 in words is "twelve million, five hundred eighteen thousand, four hundred thirty-six".