1812304 has 20 divisors (see below), whose sum is σ = 3781876. Its totient is φ = 836352.

The previous prime is 1812301. The next prime is 1812311. The reversal of 1812304 is 4032181.

It can be written as a sum of positive squares in 2 ways, for example, as 1106704 + 705600 = 1052^2 + 840^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4149 + ... + 4564.

2^1812304 is an apocalyptic number.

It is an amenable number.

1812304 is an abundant number, since it is smaller than the sum of its proper divisors (1969572).

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

1812304 is a wasteful number, since it uses less digits than its factorization.

1812304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8734 (or 8728 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1812304 is about 1346.2184072430. The cubic root of 1812304 is about 121.9205789636.

Adding to 1812304 its reverse (4032181), we get a palindrome (5844485).

It can be divided in two parts, 1812 and 304, that added together give a square (2116 = 46²).

The spelling of 1812304 in words is "one million, eight hundred twelve thousand, three hundred four".