1304816 has 10 divisors (see below), whose sum is σ = 2528112. Its totient is φ = 652400.

The previous prime is 1304803. The next prime is 1304833. The reversal of 1304816 is 6184031.

It is a junction number, because it is equal to n+sod(n) for n = 1304791 and 1304800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40760 + ... + 40791.

2^1304816 is an apocalyptic number.

1304816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1304816 is a deficient number, since it is larger than the sum of its proper divisors (1223296).

1304816 is an equidigital number, since it uses as much as digits as its factorization.

1304816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81559 (or 81553 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1304816 is about 1142.2854284285. The cubic root of 1304816 is about 109.2738952492.

Adding to 1304816 its reverse (6184031), we get a palindrome (7488847).

The spelling of 1304816 in words is "one million, three hundred four thousand, eight hundred sixteen".