320140568 has 32 divisors (see below), whose sum is σ = 655672320. Its totient is φ = 145332000.

The previous prime is 320140559. The next prime is 320140571. The reversal of 320140568 is 865041023.

It is a self number, because there is not a number n which added to its sum of digits gives 320140568.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85373 + ... + 89043.

It is an arithmetic number, because the mean of its divisors is an integer number (20489760).

Almost surely, 2^320140568 is an apocalyptic number.

It is an amenable number.

320140568 is an abundant number, since it is smaller than the sum of its proper divisors (335531752).

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

320140568 is a wasteful number, since it uses less digits than its factorization.

320140568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4679 (or 4675 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 320140568 is about 17892.4723836590. The cubic root of 320140568 is about 684.0905173005.

The spelling of 320140568 in words is "three hundred twenty million, one hundred forty thousand, five hundred sixty-eight".