2004345 has 60 divisors (see below), whose sum is σ = 4220964. Its totient is φ = 907200.

The previous prime is 2004341. The next prime is 2004347. The reversal of 2004345 is 5434002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1432809 + 571536 = 1197^2 + 756^2 .

It is not a de Polignac number, because 2004345 - 2² = 2004341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2004341) by changing a digit.

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 59 ways as a sum of consecutive naturals, for example, 19795 + ... + 19895.

2^2004345 is an apocalyptic number.

It is an amenable number.

2004345 is an abundant number, since it is smaller than the sum of its proper divisors (2216619).

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

2004345 is a wasteful number, since it uses less digits than its factorization.

2004345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 2004345 is about 1415.7489184174. The cubic root of 2004345 is about 126.0832782794.

Adding to 2004345 its reverse (5434002), we get a palindrome (7438347).

The spelling of 2004345 in words is "two million, four thousand, three hundred forty-five".