12864224 has 24 divisors (see below), whose sum is σ = 25918200. Its totient is φ = 6281856.

The previous prime is 12864217. The next prime is 12864227. The reversal of 12864224 is 42246821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12864227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3299 + ... + 6050.

It is an arithmetic number, because the mean of its divisors is an integer number (1079925).

Almost surely, 2^12864224 is an apocalyptic number.

It is an amenable number.

12864224 is an abundant number, since it is smaller than the sum of its proper divisors (13053976).

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

12864224 is an equidigital number, since it uses as much as digits as its factorization.

12864224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9402 (or 9394 counting only the distinct ones).

The product of its digits is 6144, while the sum is 29.

The square root of 12864224 is about 3586.6731102792. The cubic root of 12864224 is about 234.3120001101.

The spelling of 12864224 in words is "twelve million, eight hundred sixty-four thousand, two hundred twenty-four".