12228944 has 80 divisors (see below), whose sum is σ = 30081408. Its totient is φ = 4686336.

The previous prime is 12228929. The next prime is 12228991. The reversal of 12228944 is 44982221.

It is a happy number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 12228944.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 53759 + ... + 53985.

Almost surely, 2^12228944 is an apocalyptic number.

12228944 is a gapful number since it is divisible by the number (14) 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 12228944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15040704).

12228944 is an abundant number, since it is smaller than the sum of its proper divisors (17852464).

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

12228944 is a wasteful number, since it uses less digits than its factorization.

12228944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 286 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 12228944 is about 3496.9907063074. The cubic root of 12228944 is about 230.3896608336.

The spelling of 12228944 in words is "twelve million, two hundred twenty-eight thousand, nine hundred forty-four".