324384640 has 64 divisors (see below), whose sum is σ = 809235360. Its totient is φ = 124106752.

The previous prime is 324384623. The next prime is 324384649. The reversal of 324384640 is 46483423.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 324384596 and 324384605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (324384649) 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, 3702 + ... + 25738.

Almost surely, 2^324384640 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 324384640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (404617680).

324384640 is an abundant number, since it is smaller than the sum of its proper divisors (484850720).

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

324384640 is a wasteful number, since it uses less digits than its factorization.

324384640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22079 (or 22067 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

The square root of 324384640 is about 18010.6812752877. The cubic root of 324384640 is about 687.1002299544.

The spelling of 324384640 in words is "three hundred twenty-four million, three hundred eighty-four thousand, six hundred forty".