1304440 has 16 divisors (see below), whose sum is σ = 2935080. Its totient is φ = 521760.

The previous prime is 1304419. The next prime is 1304477. The reversal of 1304440 is 444031.

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 3 ways as a sum of consecutive naturals, for example, 16266 + ... + 16345.

2^1304440 is an apocalyptic number.

1304440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1304440 is an abundant number, since it is smaller than the sum of its proper divisors (1630640).

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

1304440 is a wasteful number, since it uses less digits than its factorization.

1304440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32622 (or 32618 counting only the distinct ones).

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

The square root of 1304440 is about 1142.1208342378. The cubic root of 1304440 is about 109.2633980011.

Adding to 1304440 its reverse (444031), we get a palindrome (1748471).

The spelling of 1304440 in words is "one million, three hundred four thousand, four hundred forty".