840324 has 24 divisors (see below), whose sum is σ = 1975680. Its totient is φ = 277984.

The previous prime is 840319. The next prime is 840331. The reversal of 840324 is 423048.

It is a happy number.

It is a super-2 number, since 2×840324² = 1412288849952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 840324.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 840324.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2722 + ... + 3014.

It is an arithmetic number, because the mean of its divisors is an integer number (82320).

2⁸⁴⁰³²⁴ is an apocalyptic number.

It is an amenable number.

840324 is an abundant number, since it is smaller than the sum of its proper divisors (1135356).

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

840324 is a wasteful number, since it uses less digits than its factorization.

840324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 537 counting only the distinct ones).

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

The square root of 840324 is about 916.6918784412. The cubic root of 840324 is about 94.3660092600.

The spelling of 840324 in words is "eight hundred forty thousand, three hundred twenty-four".