1804812 has 12 divisors (see below), whose sum is σ = 4211256. Its totient is φ = 601600.

The previous prime is 1804801. The next prime is 1804813. The reversal of 1804812 is 2184081.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1804813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75189 + ... + 75212.

It is an arithmetic number, because the mean of its divisors is an integer number (350938).

2^1804812 is an apocalyptic number.

1804812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1804812 is an abundant number, since it is smaller than the sum of its proper divisors (2406444).

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

1804812 is a wasteful number, since it uses less digits than its factorization.

1804812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150408 (or 150406 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 1804812 is about 1343.4329160773. The cubic root of 1804812 is about 121.7523418153.

Adding to 1804812 its reverse (2184081), we get a palindrome (3988893).

The spelling of 1804812 in words is "one million, eight hundred four thousand, eight hundred twelve".