811728736 has 48 divisors (see below), whose sum is σ = 1966888224. Its totient is φ = 321122304.

The previous prime is 811728721. The next prime is 811728781. The reversal of 811728736 is 637827118.

811728736 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 811728692 and 811728701.

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, 136465 + ... + 142288.

It is an arithmetic number, because the mean of its divisors is an integer number (40976838).

Almost surely, 2^811728736 is an apocalyptic number.

It is an amenable number.

811728736 is an abundant number, since it is smaller than the sum of its proper divisors (1155159488).

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

811728736 is a wasteful number, since it uses less digits than its factorization.

811728736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278783 (or 278775 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 811728736 is about 28490.8535498675. The cubic root of 811728736 is about 932.8324391686.

The spelling of 811728736 in words is "eight hundred eleven million, seven hundred twenty-eight thousand, seven hundred thirty-six".