320440834 has 16 divisors (see below), whose sum is σ = 550440000. Its totient is φ = 137053584.

The previous prime is 320440829. The next prime is 320440867. The reversal of 320440834 is 438044023.

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, 15949 + ... + 29920.

It is an arithmetic number, because the mean of its divisors is an integer number (34402500).

Almost surely, 2^320440834 is an apocalyptic number.

320440834 is a deficient number, since it is larger than the sum of its proper divisors (229999166).

320440834 is a wasteful number, since it uses less digits than its factorization.

320440834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46377.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 320440834 is about 17900.8612641962. The cubic root of 320440834 is about 684.3043243571.

Adding to 320440834 its reverse (438044023), we get a palindrome (758484857).

The spelling of 320440834 in words is "three hundred twenty million, four hundred forty thousand, eight hundred thirty-four".