204002004 has 48 divisors (see below), whose sum is σ = 485593920. Its totient is φ = 66643200.

The previous prime is 204001997. The next prime is 204002047. The reversal of 204002004 is 400200402.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156154 + ... + 157454.

It is an arithmetic number, because the mean of its divisors is an integer number (10116540).

Almost surely, 2^204002004 is an apocalyptic number.

It is an amenable number.

204002004 is an abundant number, since it is smaller than the sum of its proper divisors (281591916).

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

204002004 is a wasteful number, since it uses less digits than its factorization.

204002004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 204002004 is about 14282.9270109456. The cubic root of 204002004 is about 588.6784593091.

Adding to 204002004 its reverse (400200402), we get a palindrome (604202406).

The spelling of 204002004 in words is "two hundred four million, two thousand, four".