12322320 has 40 divisors (see below), whose sum is σ = 38199936. Its totient is φ = 3285888.

The previous prime is 12322309. The next prime is 12322333. The reversal of 12322320 is 2322321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12322320.

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, 25432 + ... + 25911.

Almost surely, 2^12322320 is an apocalyptic number.

12322320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12322320 is an abundant number, since it is smaller than the sum of its proper divisors (25877616).

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

12322320 is a wasteful number, since it uses less digits than its factorization.

12322320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51359 (or 51353 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 12322320 is about 3510.3162250715. The cubic root of 12322320 is about 230.9745666420.

Adding to 12322320 its reverse (2322321), we get a palindrome (14644641).

Subtracting from 12322320 its reverse (2322321), we obtain a palindrome (9999999).

The spelling of 12322320 in words is "twelve million, three hundred twenty-two thousand, three hundred twenty".