12406224 has 40 divisors (see below), whose sum is σ = 32310432. Its totient is φ = 4101760.

The previous prime is 12406217. The next prime is 12406253. The reversal of 12406224 is 42260421.

It is a self number, because there is not a number n which added to its sum of digits gives 12406224.

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, 5302 + ... + 7274.

Almost surely, 2^12406224 is an apocalyptic number.

It is an amenable number.

12406224 is an abundant number, since it is smaller than the sum of its proper divisors (19904208).

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

12406224 is a wasteful number, since it uses less digits than its factorization.

12406224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115 (or 2109 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 12406224 is about 3522.2470100775. The cubic root of 12406224 is about 231.4976247877.

Adding to 12406224 its reverse (42260421), we get a palindrome (54666645).

The spelling of 12406224 in words is "twelve million, four hundred six thousand, two hundred twenty-four".