320343456 has 48 divisors (see below), whose sum is σ = 841881600. Its totient is φ = 106656768.

The previous prime is 320343449. The next prime is 320343497. The reversal of 320343456 is 654343023.

It is a tau number, because it is divible by the number of its divisors (48).

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, 121480 + ... + 124088.

It is an arithmetic number, because the mean of its divisors is an integer number (17539200).

Almost surely, 2^320343456 is an apocalyptic number.

It is an amenable number.

320343456 is an abundant number, since it is smaller than the sum of its proper divisors (521538144).

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

320343456 is a wasteful number, since it uses less digits than its factorization.

320343456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3901 (or 3893 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

The square root of 320343456 is about 17898.1411325311. The cubic root of 320343456 is about 684.2350001319.

Adding to 320343456 its reverse (654343023), we get a palindrome (974686479).

The spelling of 320343456 in words is "three hundred twenty million, three hundred forty-three thousand, four hundred fifty-six".