1320304 has 20 divisors (see below), whose sum is σ = 2577960. Its totient is φ = 655040.

The previous prime is 1320301. The next prime is 1320307. The reversal of 1320304 is 4030231.

It is an interprime number because it is at equal distance from previous prime (1320301) and next prime (1320307).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320301) 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, 2634 + ... + 3094.

It is an arithmetic number, because the mean of its divisors is an integer number (128898).

2^1320304 is an apocalyptic number.

It is an amenable number.

1320304 is a deficient number, since it is larger than the sum of its proper divisors (1257656).

1320304 is a wasteful number, since it uses less digits than its factorization.

1320304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1320304 is about 1149.0448207098. The cubic root of 1320304 is about 109.7045515194.

Adding to 1320304 its reverse (4030231), we get a palindrome (5350535).

The spelling of 1320304 in words is "one million, three hundred twenty thousand, three hundred four".