1808004 has 24 divisors (see below), whose sum is σ = 4602528. Its totient is φ = 547840.

The previous prime is 1808003. The next prime is 1808017. The reversal of 1808004 is 4008081.

It is not an unprimeable number, because it can be changed into a prime (1808003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6717 + ... + 6980.

It is an arithmetic number, because the mean of its divisors is an integer number (191772).

2^1808004 is an apocalyptic number.

It is an amenable number.

1808004 is an abundant number, since it is smaller than the sum of its proper divisors (2794524).

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

1808004 is a wasteful number, since it uses less digits than its factorization.

1808004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13715 (or 13713 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

The square root of 1808004 is about 1344.6203925272. The cubic root of 1808004 is about 121.8240768190.

The spelling of 1808004 in words is "one million, eight hundred eight thousand, four".