12239328 has 24 divisors (see below), whose sum is σ = 32128488. Its totient is φ = 4079744.

The previous prime is 12239323. The next prime is 12239329. The reversal of 12239328 is 82393221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×12239328² = 299602299783168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12239295 and 12239304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12239321) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 63651 + ... + 63842.

It is an arithmetic number, because the mean of its divisors is an integer number (1338687).

Almost surely, 2^12239328 is an apocalyptic number.

It is an amenable number.

12239328 is an abundant number, since it is smaller than the sum of its proper divisors (19889160).

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

12239328 is a wasteful number, since it uses less digits than its factorization.

12239328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127506 (or 127498 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 12239328 is about 3498.4750963813. The cubic root of 12239328 is about 230.4548528734.

The spelling of 12239328 in words is "twelve million, two hundred thirty-nine thousand, three hundred twenty-eight".