1304504 has 8 divisors (see below), whose sum is σ = 2445960. Its totient is φ = 652248.

The previous prime is 1304503. The next prime is 1304519. The reversal of 1304504 is 4054031.

1304504 = 278² + 279² + ... + 293².

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304503) by changing a digit.

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 as a sum of consecutive naturals, namely, 81524 + ... + 81539.

It is an arithmetic number, because the mean of its divisors is an integer number (305745).

2^1304504 is an apocalyptic number.

It is an amenable number.

1304504 is a deficient number, since it is larger than the sum of its proper divisors (1141456).

1304504 is a wasteful number, since it uses less digits than its factorization.

1304504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163069 (or 163065 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1304504 is about 1142.1488519453. The cubic root of 1304504 is about 109.2651849092.

Adding to 1304504 its reverse (4054031), we get a palindrome (5358535).

The spelling of 1304504 in words is "one million, three hundred four thousand, five hundred four".