12321568 has 48 divisors (see below), whose sum is σ = 28171584. Its totient is φ = 5195520.

The previous prime is 12321563. The next prime is 12321571. The reversal of 12321568 is 86512321.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (12321563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14598 + ... + 15418.

It is an arithmetic number, because the mean of its divisors is an integer number (586908).

Almost surely, 2^12321568 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 12321568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14085792).

12321568 is an abundant number, since it is smaller than the sum of its proper divisors (15850016).

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

12321568 is an equidigital number, since it uses as much as digits as its factorization.

12321568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 897 counting only the distinct ones).

The product of its digits is 2880, while the sum is 28.

The square root of 12321568 is about 3510.2091105802. The cubic root of 12321568 is about 230.9698679487.

Adding to 12321568 its reverse (86512321), we get a palindrome (98833889).

The spelling of 12321568 in words is "twelve million, three hundred twenty-one thousand, five hundred sixty-eight".