1804836 has 48 divisors (see below), whose sum is σ = 4673088. Its totient is φ = 542080.

The previous prime is 1804819. The next prime is 1804841. The reversal of 1804836 is 6384081.

It is a happy 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, 15916 + ... + 16028.

It is an arithmetic number, because the mean of its divisors is an integer number (97356).

2^1804836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1804836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2336544).

1804836 is an abundant number, since it is smaller than the sum of its proper divisors (2868252).

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

1804836 is a wasteful number, since it uses less digits than its factorization.

1804836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1804836 is about 1343.4418483879. The cubic root of 1804836 is about 121.7528814916.

The spelling of 1804836 in words is "one million, eight hundred four thousand, eight hundred thirty-six".