12321444 has 24 divisors (see below), whose sum is σ = 29528128. Its totient is φ = 3996000.

The previous prime is 12321437. The next prime is 12321461. The reversal of 12321444 is 44412321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12321444.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13432 + ... + 14319.

Almost surely, 2^12321444 is an apocalyptic number.

It is an amenable number.

12321444 is an abundant number, since it is smaller than the sum of its proper divisors (17206684).

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

12321444 is a wasteful number, since it uses less digits than its factorization.

12321444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27795 (or 27793 counting only the distinct ones).

The product of its digits is 768, while the sum is 21.

The square root of 12321444 is about 3510.1914477703. The cubic root of 12321444 is about 230.9690931458.

Adding to 12321444 its reverse (44412321), we get a palindrome (56733765).

The spelling of 12321444 in words is "twelve million, three hundred twenty-one thousand, four hundred forty-four".