12321472 has 28 divisors (see below), whose sum is σ = 24770080. Its totient is φ = 6080256.

The previous prime is 12321461. The next prime is 12321479. The reversal of 12321472 is 27412321.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12321479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3838 + ... + 6274.

Almost surely, 2^12321472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12321472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12385040).

12321472 is an abundant number, since it is smaller than the sum of its proper divisors (12448608).

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

12321472 is an equidigital number, since it uses as much as digits as its factorization.

12321472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2528 (or 2518 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 12321472 is about 3510.1954361545. The cubic root of 12321472 is about 230.9692681017.

Adding to 12321472 its reverse (27412321), we get a palindrome (39733793).

It can be divided in two parts, 1232 and 1472, that added together give a square (2704 = 52²).

The spelling of 12321472 in words is "twelve million, three hundred twenty-one thousand, four hundred seventy-two".