322720304 has 10 divisors (see below), whose sum is σ = 625270620. Its totient is φ = 161360144.

The previous prime is 322720303. The next prime is 322720309. The reversal of 322720304 is 403027223.

322720304 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×322720304² = 208296789227704832, 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 322720304.

It is not an unprimeable number, because it can be changed into a prime (322720303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10084994 + ... + 10085025.

It is an arithmetic number, because the mean of its divisors is an integer number (62527062).

Almost surely, 2^322720304 is an apocalyptic number.

It is an amenable number.

322720304 is a deficient number, since it is larger than the sum of its proper divisors (302550316).

322720304 is a wasteful number, since it uses less digits than its factorization.

322720304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20170027 (or 20170021 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 322720304 is about 17964.4177194809. The cubic root of 322720304 is about 685.9231016489.

Adding to 322720304 its reverse (403027223), we get a palindrome (725747527).

The spelling of 322720304 in words is "three hundred twenty-two million, seven hundred twenty thousand, three hundred four".