324240 has 80 divisors (see below), whose sum is σ = 1154688. Its totient is φ = 73728.

The previous prime is 324239. The next prime is 324251. The reversal of 324240 is 42423.

It is a happy number.

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 (15).

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 324240.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1584 + ... + 1776.

2³²⁴²⁴⁰ is an apocalyptic number.

324240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 324240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (577344).

324240 is an abundant number, since it is smaller than the sum of its proper divisors (830448).

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

324240 is a wasteful number, since it uses less digits than its factorization.

324240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 324240 is about 569.4207583150. The cubic root of 324240 is about 68.6998090971.

Adding to 324240 its reverse (42423), we get a palindrome (366663).

The spelling of 324240 in words is "three hundred twenty-four thousand, two hundred forty", and thus it is an iban number.