1320804 has 36 divisors (see below), whose sum is σ = 3516240. Its totient is φ = 416880.

The previous prime is 1320799. The next prime is 1320811. The reversal of 1320804 is 4080231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 282 + ... + 1649.

2^1320804 is an apocalyptic number.

It is an amenable number.

1320804 is an abundant number, since it is smaller than the sum of its proper divisors (2195436).

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

1320804 is a wasteful number, since it uses less digits than its factorization.

1320804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1960 (or 1955 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1320804 is about 1149.2623721327. The cubic root of 1320804 is about 109.7183981671.

The spelling of 1320804 in words is "one million, three hundred twenty thousand, eight hundred four".