813244272 has 20 divisors (see below), whose sum is σ = 2100881160. Its totient is φ = 271081408.

The previous prime is 813244261. The next prime is 813244291. The reversal of 813244272 is 272442318.

It is a happy number.

813244272 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 2×813244272² = 1322732491881619968, 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 in 3 ways as a sum of consecutive naturals, for example, 8471247 + ... + 8471342.

It is an arithmetic number, because the mean of its divisors is an integer number (105044058).

Almost surely, 2^813244272 is an apocalyptic number.

It is an amenable number.

813244272 is an abundant number, since it is smaller than the sum of its proper divisors (1287636888).

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

813244272 is a wasteful number, since it uses less digits than its factorization.

813244272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16942600 (or 16942594 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 813244272 is about 28517.4380335962. The cubic root of 813244272 is about 933.4126256897.

The spelling of 813244272 in words is "eight hundred thirteen million, two hundred forty-four thousand, two hundred seventy-two".