320104440 has 128 divisors (see below), whose sum is σ = 1080172800. Its totient is φ = 84309120.

The previous prime is 320104439. The next prime is 320104459. The reversal of 320104440 is 44401023.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87855 + ... + 91425.

It is an arithmetic number, because the mean of its divisors is an integer number (8438850).

Almost surely, 2^320104440 is an apocalyptic number.

320104440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320104440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540086400).

320104440 is an abundant number, since it is smaller than the sum of its proper divisors (760068360).

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

320104440 is a wasteful number, since it uses less digits than its factorization.

320104440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674 (or 3664 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 320104440 is about 17891.4627685944. The cubic root of 320104440 is about 684.0647830300.

Adding to 320104440 its reverse (44401023), we get a palindrome (364505463).

The spelling of 320104440 in words is "three hundred twenty million, one hundred four thousand, four hundred forty".