320421044 has 24 divisors (see below), whose sum is σ = 572880000. Its totient is φ = 156768480.

The previous prime is 320421041. The next prime is 320421089. The reversal of 320421044 is 440124023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320421041) 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, 45257 + ... + 51855.

It is an arithmetic number, because the mean of its divisors is an integer number (23870000).

Almost surely, 2^320421044 is an apocalyptic number.

It is an amenable number.

320421044 is a deficient number, since it is larger than the sum of its proper divisors (252458956).

320421044 is a wasteful number, since it uses less digits than its factorization.

320421044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6863 (or 6861 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 320421044 is about 17900.3084889619. The cubic root of 320421044 is about 684.2902368253.

Adding to 320421044 its reverse (440124023), we get a palindrome (760545067).

The spelling of 320421044 in words is "three hundred twenty million, four hundred twenty-one thousand, forty-four".