320545144 has 16 divisors (see below), whose sum is σ = 604623600. Its totient is φ = 159312192.

The previous prime is 320545103. The next prime is 320545163. The reversal of 320545144 is 441545023.

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 3 ways as a sum of consecutive naturals, for example, 118629 + ... + 121300.

It is an arithmetic number, because the mean of its divisors is an integer number (37788975).

Almost surely, 2^320545144 is an apocalyptic number.

It is an amenable number.

320545144 is a deficient number, since it is larger than the sum of its proper divisors (284078456).

320545144 is a wasteful number, since it uses less digits than its factorization.

320545144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240102 (or 240098 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 320545144 is about 17903.7745740947. The cubic root of 320545144 is about 684.3785679540.

The spelling of 320545144 in words is "three hundred twenty million, five hundred forty-five thousand, one hundred forty-four".