320442004 has 12 divisors (see below), whose sum is σ = 561133300. Its totient is φ = 160118208.

The previous prime is 320441983. The next prime is 320442029. The reversal of 320442004 is 400244023.

It can be written as a sum of positive squares in 2 ways, for example, as 210192004 + 110250000 = 14498^2 + 10500^2 .

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, 18459 + ... + 31330.

Almost surely, 2^320442004 is an apocalyptic number.

It is an amenable number.

320442004 is a deficient number, since it is larger than the sum of its proper divisors (240691296).

320442004 is a wasteful number, since it uses less digits than its factorization.

320442004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51402 (or 51400 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 320442004 is about 17900.8939441582. The cubic root of 320442004 is about 684.3051572047.

Adding to 320442004 its reverse (400244023), we get a palindrome (720686027).

The spelling of 320442004 in words is "three hundred twenty million, four hundred forty-two thousand, four".