324520400 has 60 divisors (see below), whose sum is σ = 804841344. Its totient is φ = 125616000.

The previous prime is 324520397. The next prime is 324520439. The reversal of 324520400 is 4025423.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 686 + ... + 25485.

Almost surely, 2^324520400 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 324520400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402420672).

324520400 is an abundant number, since it is smaller than the sum of its proper divisors (480320944).

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

324520400 is a wasteful number, since it uses less digits than its factorization.

324520400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26220 (or 26209 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 324520400 is about 18014.4497556822. The cubic root of 324520400 is about 687.1960706176.

Adding to 324520400 its reverse (4025423), we get a palindrome (328545823).

The spelling of 324520400 in words is "three hundred twenty-four million, five hundred twenty thousand, four hundred".