1304400004 has 12 divisors (see below), whose sum is σ = 2416976604. Its totient is φ = 613835264.

The previous prime is 1304399981. The next prime is 1304400007. The reversal of 1304400004 is 4000044031.

It can be written as a sum of positive squares in 2 ways, for example, as 832207104 + 472192900 = 28848^2 + 21730^2 .

It is not an unprimeable number, because it can be changed into a prime (1304400007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9591109 + ... + 9591244.

It is an arithmetic number, because the mean of its divisors is an integer number (201414717).

Almost surely, 2^1304400004 is an apocalyptic number.

It is an amenable number.

1304400004 is a deficient number, since it is larger than the sum of its proper divisors (1112576600).

1304400004 is a wasteful number, since it uses less digits than its factorization.

1304400004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19182374 (or 19182372 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1304400004 is about 36116.4782890027. The cubic root of 1304400004 is about 1092.6228126558.

Adding to 1304400004 its reverse (4000044031), we get a palindrome (5304444035).

The spelling of 1304400004 in words is "one billion, three hundred four million, four hundred thousand, four".