12224256 has 72 divisors (see below), whose sum is σ = 35516544. Its totient is φ = 3701760.

The previous prime is 12224221. The next prime is 12224257. The reversal of 12224256 is 65242221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7725 + ... + 9171.

Almost surely, 2^12224256 is an apocalyptic number.

12224256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12224256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17758272).

12224256 is an abundant number, since it is smaller than the sum of its proper divisors (23292288).

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

12224256 is a wasteful number, since it uses less digits than its factorization.

12224256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477 (or 1463 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 12224256 is about 3496.3203514552. The cubic root of 12224256 is about 230.3602168965.

Adding to 12224256 its reverse (65242221), we get a palindrome (77466477).

The spelling of 12224256 in words is "twelve million, two hundred twenty-four thousand, two hundred fifty-six".