320844 has 12 divisors (see below), whose sum is σ = 748664. Its totient is φ = 106944.

The previous prime is 320843. The next prime is 320851. The reversal of 320844 is 448023.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 320844.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 320844.

It is not an unprimeable number, because it can be changed into a prime (320843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13357 + ... + 13380.

2³²⁰⁸⁴⁴ is an apocalyptic number.

It is an amenable number.

320844 is an abundant number, since it is smaller than the sum of its proper divisors (427820).

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

320844 is a wasteful number, since it uses less digits than its factorization.

320844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26744 (or 26742 counting only the distinct ones).

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

The square root of 320844 is about 566.4309313588. The cubic root of 320844 is about 68.4591192306.

Adding to 320844 its reverse (448023), we get a palindrome (768867).

The spelling of 320844 in words is "three hundred twenty thousand, eight hundred forty-four".