320768544 has 48 divisors (see below), whose sum is σ = 845752320. Its totient is φ = 106448640.

The previous prime is 320768533. The next prime is 320768573. The reversal of 320768544 is 445867023.

It is a happy number.

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

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 14689 + ... + 29279.

It is an arithmetic number, because the mean of its divisors is an integer number (17619840).

Almost surely, 2^320768544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320768544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422876160).

320768544 is an abundant number, since it is smaller than the sum of its proper divisors (524983776).

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

320768544 is a wasteful number, since it uses less digits than its factorization.

320768544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14833 (or 14825 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 39.

The square root of 320768544 is about 17910.0123953056. The cubic root of 320768544 is about 684.5375207779.

The spelling of 320768544 in words is "three hundred twenty million, seven hundred sixty-eight thousand, five hundred forty-four".