2003004 has 18 divisors (see below), whose sum is σ = 5063240. Its totient is φ = 667656.

The previous prime is 2002997. The next prime is 2003009. The reversal of 2003004 is 4003002.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27784 + ... + 27855.

2^2003004 is an apocalyptic number.

It is an amenable number.

2003004 is an abundant number, since it is smaller than the sum of its proper divisors (3060236).

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

2003004 is a wasteful number, since it uses less digits than its factorization.

2003004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55649 (or 55644 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 9.

The square root of 2003004 is about 1415.2752382487. The cubic root of 2003004 is about 126.0551534810.

Adding to 2003004 its reverse (4003002), we get a palindrome (6006006).

The spelling of 2003004 in words is "two million, three thousand, four".