324402320 has 80 divisors (see below), whose sum is σ = 842035392. Its totient is φ = 115207680.

The previous prime is 324402317. The next prime is 324402329. The reversal of 324402320 is 23204423.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 324402292 and 324402301.

It is not an unprimeable number, because it can be changed into a prime (324402329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33554 + ... + 42126.

Almost surely, 2^324402320 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 324402320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (421017696).

324402320 is an abundant number, since it is smaller than the sum of its proper divisors (517633072).

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

324402320 is a wasteful number, since it uses less digits than its factorization.

324402320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8640 (or 8634 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 324402320 is about 18011.1720884567. The cubic root of 324402320 is about 687.1127127808.

Adding to 324402320 its reverse (23204423), we get a palindrome (347606743).

The spelling of 324402320 in words is "three hundred twenty-four million, four hundred two thousand, three hundred twenty".