1806812 has 24 divisors (see below), whose sum is σ = 3644256. Its totient is φ = 767808.

The previous prime is 1806803. The next prime is 1806839. The reversal of 1806812 is 2186081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4658 + ... + 5030.

It is an arithmetic number, because the mean of its divisors is an integer number (151844).

2^1806812 is an apocalyptic number.

It is an amenable number.

1806812 is an abundant number, since it is smaller than the sum of its proper divisors (1837444).

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

1806812 is a wasteful number, since it uses less digits than its factorization.

1806812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1806812 is about 1344.1770716688. The cubic root of 1806812 is about 121.7972984446.

The spelling of 1806812 in words is "one million, eight hundred six thousand, eight hundred twelve".