324840 has 32 divisors (see below), whose sum is σ = 974880. Its totient is φ = 86592.

The previous prime is 324839. The next prime is 324847. The reversal of 324840 is 48423.

It is a happy number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 324840.

It is not an unprimeable number, because it can be changed into a prime (324847) 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, 1234 + ... + 1473.

It is an arithmetic number, because the mean of its divisors is an integer number (30465).

2³²⁴⁸⁴⁰ is an apocalyptic number.

324840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

324840 is an abundant number, since it is smaller than the sum of its proper divisors (650040).

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

324840 is a wasteful number, since it uses less digits than its factorization.

324840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721 (or 2717 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 324840 is about 569.9473659909. The cubic root of 324840 is about 68.7421588853.

The spelling of 324840 in words is "three hundred twenty-four thousand, eight hundred forty".