2002004 has 6 divisors (see below), whose sum is σ = 3503514. Its totient is φ = 1001000.

The previous prime is 2002001. The next prime is 2002009. The reversal of 2002004 is 4002002.

It can be written as a sum of positive squares in only one way, i.e., 1817104 + 184900 = 1348^2 + 430^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2001982 and 2002000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250247 + ... + 250254.

It is an arithmetic number, because the mean of its divisors is an integer number (583919).

2^2002004 is an apocalyptic number.

It is an amenable number.

2002004 is a deficient number, since it is larger than the sum of its proper divisors (1501510).

2002004 is a wasteful number, since it uses less digits than its factorization.

2002004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500505 (or 500503 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 2002004 is about 1414.9219059722. The cubic root of 2002004 is about 126.0341723052.

Adding to 2002004 its reverse (4002002), we get a palindrome (6004006).

The spelling of 2002004 in words is "two million, two thousand, four", and thus it is an eban number.