320345360 has 40 divisors (see below), whose sum is σ = 747749016. Its totient is φ = 127631360.

The previous prime is 320345359. The next prime is 320345369. The reversal of 320345360 is 63543023.

It can be written as a sum of positive squares in 4 ways, for example, as 88209664 + 232135696 = 9392^2 + 15236^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×320345360² = 205242299347059200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320345369) 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, 12770 + ... + 28350.

Almost surely, 2^320345360 is an apocalyptic number.

It is an amenable number.

320345360 is an abundant number, since it is smaller than the sum of its proper divisors (427403656).

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

320345360 is a wasteful number, since it uses less digits than its factorization.

320345360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15851 (or 15845 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 320345360 is about 17898.1943223332. The cubic root of 320345360 is about 684.2363557404.

Adding to 320345360 its reverse (63543023), we get a palindrome (383888383).

The spelling of 320345360 in words is "three hundred twenty million, three hundred forty-five thousand, three hundred sixty".