813244 has 6 divisors (see below), whose sum is σ = 1423184. Its totient is φ = 406620.

The previous prime is 813227. The next prime is 813251. The reversal of 813244 is 442318.

813244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×813244² = 1322731607072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101652 + ... + 101659.

2⁸¹³²⁴⁴ is an apocalyptic number.

It is an amenable number.

813244 is a deficient number, since it is larger than the sum of its proper divisors (609940).

813244 is a wasteful number, since it uses less digits than its factorization.

813244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203315 (or 203313 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 813244 is about 901.8004213794. The cubic root of 813244 is about 93.3412521626.

The spelling of 813244 in words is "eight hundred thirteen thousand, two hundred forty-four".