2009812 has 24 divisors (see below), whose sum is σ = 4052160. Its totient is φ = 854400.

The previous prime is 2009807. The next prime is 2009827. The reversal of 2009812 is 2189002.

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, 4812 + ... + 5212.

It is an arithmetic number, because the mean of its divisors is an integer number (168840).

2^2009812 is an apocalyptic number.

It is an amenable number.

2009812 is an abundant number, since it is smaller than the sum of its proper divisors (2042348).

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

2009812 is a wasteful number, since it uses less digits than its factorization.

2009812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2009812 is about 1417.6783838375. The cubic root of 2009812 is about 126.1978080513.

The spelling of 2009812 in words is "two million, nine thousand, eight hundred twelve".