320320004 has 6 divisors (see below), whose sum is σ = 560560014. Its totient is φ = 160160000.

The previous prime is 320319973. The next prime is 320320037. The reversal of 320320004 is 400023023.

It can be written as a sum of positive squares in only one way, i.e., 318551104 + 1768900 = 17848^2 + 1330^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40039997 + ... + 40040004.

It is an arithmetic number, because the mean of its divisors is an integer number (93426669).

Almost surely, 2^320320004 is an apocalyptic number.

It is an amenable number.

320320004 is a deficient number, since it is larger than the sum of its proper divisors (240240010).

320320004 is a wasteful number, since it uses less digits than its factorization.

320320004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80080005 (or 80080003 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 320320004 is about 17897.4859687052. The cubic root of 320320004 is about 684.2183023549.

Adding to 320320004 its reverse (400023023), we get a palindrome (720343027).

The spelling of 320320004 in words is "three hundred twenty million, three hundred twenty thousand, four".