324421400 has 48 divisors (see below), whose sum is σ = 763864800. Its totient is φ = 128119680.

The previous prime is 324421379. The next prime is 324421411. The reversal of 324421400 is 4124423.

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5534 + ... + 26066.

It is an arithmetic number, because the mean of its divisors is an integer number (15913850).

Almost surely, 2^324421400 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 324421400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381932400).

324421400 is an abundant number, since it is smaller than the sum of its proper divisors (439443400).

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

324421400 is a wasteful number, since it uses less digits than its factorization.

324421400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20628 (or 20619 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 324421400 is about 18011.7017519167. The cubic root of 324421400 is about 687.1261835574.

Adding to 324421400 its reverse (4124423), we get a palindrome (328545823).

The spelling of 324421400 in words is "three hundred twenty-four million, four hundred twenty-one thousand, four hundred".