12518428 has 12 divisors (see below), whose sum is σ = 23592520. Its totient is φ = 5777712.

The previous prime is 12518423. The next prime is 12518447. The reversal of 12518428 is 82481521.

It is a super-2 number, since 2×12518428² = 313422079182368, which contains 22 as substring.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12518428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12518423) 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, 120318 + ... + 120421.

Almost surely, 2^12518428 is an apocalyptic number.

It is an amenable number.

12518428 is a deficient number, since it is larger than the sum of its proper divisors (11074092).

12518428 is a wasteful number, since it uses less digits than its factorization.

12518428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240756 (or 240754 counting only the distinct ones).

The product of its digits is 5120, while the sum is 31.

The square root of 12518428 is about 3538.1390588839. The cubic root of 12518428 is about 232.1934326143.

Adding to 12518428 its reverse (82481521), we get a palindrome (94999949).

The spelling of 12518428 in words is "twelve million, five hundred eighteen thousand, four hundred twenty-eight".