12227328 has 144 divisors (see below), whose sum is σ = 38018400. Its totient is φ = 3870720.

The previous prime is 12227323. The next prime is 12227333. The reversal of 12227328 is 82372221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12227323) and next prime (12227333).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (12227323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200418 + ... + 200478.

Almost surely, 2^12227328 is an apocalyptic number.

12227328 is a gapful number since it is divisible by the number (18) 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 12227328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19009200).

12227328 is an abundant number, since it is smaller than the sum of its proper divisors (25791072).

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

12227328 is an equidigital number, since it uses as much as digits as its factorization.

12227328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 95 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 12227328 is about 3496.7596428694. The cubic root of 12227328 is about 230.3795120671.

Adding to 12227328 its reverse (82372221), we get a palindrome (94599549).

The spelling of 12227328 in words is "twelve million, two hundred twenty-seven thousand, three hundred twenty-eight".