1304320404 has 12 divisors (see below), whose sum is σ = 3043414304. Its totient is φ = 434773464.

The previous prime is 1304320397. The next prime is 1304320421. The reversal of 1304320404 is 4040234031.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54346672 + ... + 54346695.

Almost surely, 2^1304320404 is an apocalyptic number.

It is an amenable number.

1304320404 is an abundant number, since it is smaller than the sum of its proper divisors (1739093900).

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

1304320404 is a wasteful number, since it uses less digits than its factorization.

1304320404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108693374 (or 108693372 counting only the distinct ones).

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

The square root of 1304320404 is about 36115.3762821322. The cubic root of 1304320404 is about 1092.6005867167.

Adding to 1304320404 its reverse (4040234031), we get a palindrome (5344554435).

The spelling of 1304320404 in words is "one billion, three hundred four million, three hundred twenty thousand, four hundred four".