12443328 has 112 divisors (see below), whose sum is σ = 38608000. Its totient is φ = 3919104.

The previous prime is 12443323. The next prime is 12443339. The reversal of 12443328 is 82334421.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12443323) 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, 32643 + ... + 33021.

Almost surely, 2^12443328 is an apocalyptic number.

12443328 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 12443328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19304000).

12443328 is an abundant number, since it is smaller than the sum of its proper divisors (26164672).

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

12443328 is a wasteful number, since it uses less digits than its factorization.

12443328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 403 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 12443328 is about 3527.5101700775. The cubic root of 12443328 is about 231.7281794686.

Adding to 12443328 its reverse (82334421), we get a palindrome (94777749).

The spelling of 12443328 in words is "twelve million, four hundred forty-three thousand, three hundred twenty-eight".