811244 has 18 divisors (see below), whose sum is σ = 1651860. Its totient is φ = 347592.

The previous prime is 811241. The next prime is 811253. The reversal of 811244 is 442118.

It is not an unprimeable number, because it can be changed into a prime (811241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1874 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (91770).

2⁸¹¹²⁴⁴ is an apocalyptic number.

It is an amenable number.

811244 is an abundant number, since it is smaller than the sum of its proper divisors (840616).

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

811244 is a wasteful number, since it uses less digits than its factorization.

811244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157 (or 4148 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 811244 is about 900.6908459621. The cubic root of 811244 is about 93.2646717230.

The spelling of 811244 in words is "eight hundred eleven thousand, two hundred forty-four".