1812812 has 24 divisors (see below), whose sum is σ = 3429216. Its totient is φ = 835328.

The previous prime is 1812793. The next prime is 1812817. The reversal of 1812812 is 2182181.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1812817) 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 7 ways as a sum of consecutive naturals, for example, 3353 + ... + 3855.

It is an arithmetic number, because the mean of its divisors is an integer number (142884).

2^1812812 is an apocalyptic number.

It is an amenable number.

1812812 is a deficient number, since it is larger than the sum of its proper divisors (1616404).

1812812 is a wasteful number, since it uses less digits than its factorization.

1812812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 575 counting only the distinct ones).

The product of its digits is 256, while the sum is 23.

The square root of 1812812 is about 1346.4070706885. The cubic root of 1812812 is about 121.9319695964.

Adding to 1812812 its reverse (2182181), we get a palindrome (3994993).

The spelling of 1812812 in words is "one million, eight hundred twelve thousand, eight hundred twelve".