320493856 has 12 divisors (see below), whose sum is σ = 630972342. Its totient is φ = 160246912.

The previous prime is 320493853. The next prime is 320493869. The reversal of 320493856 is 658394023.

320493856 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 313290000 + 7203856 = 17700^2 + 2684^2 .

It is not an unprimeable number, because it can be changed into a prime (320493853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5007685 + ... + 5007748.

Almost surely, 2^320493856 is an apocalyptic number.

It is an amenable number.

320493856 is a deficient number, since it is larger than the sum of its proper divisors (310478486).

320493856 is a wasteful number, since it uses less digits than its factorization.

320493856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10015443 (or 10015435 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 320493856 is about 17902.3421931322. The cubic root of 320493856 is about 684.3420652638.

The spelling of 320493856 in words is "three hundred twenty million, four hundred ninety-three thousand, eight hundred fifty-six".