1304406 has 12 divisors (see below), whose sum is σ = 2826252. Its totient is φ = 434796.

The previous prime is 1304389. The next prime is 1304411. The reversal of 1304406 is 6044031.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 72467 = 1304406 / (1 + 3 + 0 + 4 + 4 + 0 + 6).

It is a Curzon number.

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 5 ways as a sum of consecutive naturals, for example, 36216 + ... + 36251.

It is an arithmetic number, because the mean of its divisors is an integer number (235521).

2^1304406 is an apocalyptic number.

1304406 is an abundant number, since it is smaller than the sum of its proper divisors (1521846).

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

1304406 is a wasteful number, since it uses less digits than its factorization.

1304406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72475 (or 72472 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1304406 is about 1142.1059495511. The cubic root of 1304406 is about 109.2624486824.

Adding to 1304406 its reverse (6044031), we get a palindrome (7348437).

The spelling of 1304406 in words is "one million, three hundred four thousand, four hundred six".