320130444 has 24 divisors (see below), whose sum is σ = 749755440. Its totient is φ = 106312384.

The previous prime is 320130431. The next prime is 320130511. The reversal of 320130444 is 444031023.

320130444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 320130444.

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, 46359 + ... + 52814.

It is an arithmetic number, because the mean of its divisors is an integer number (31239810).

Almost surely, 2^320130444 is an apocalyptic number.

It is an amenable number.

320130444 is an abundant number, since it is smaller than the sum of its proper divisors (429624996).

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

320130444 is a wasteful number, since it uses less digits than its factorization.

320130444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99449 (or 99447 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 320130444 is about 17892.1894691511. The cubic root of 320130444 is about 684.0833060876.

Adding to 320130444 its reverse (444031023), we get a palindrome (764161467).

The spelling of 320130444 in words is "three hundred twenty million, one hundred thirty thousand, four hundred forty-four".