812538328 has 64 divisors (see below), whose sum is σ = 1792627200. Its totient is φ = 338023680.

The previous prime is 812538313. The next prime is 812538329. The reversal of 812538328 is 823835218.

812538328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812538329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 520413 + ... + 521971.

It is an arithmetic number, because the mean of its divisors is an integer number (28009800).

Almost surely, 2^812538328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812538328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896313600).

812538328 is an abundant number, since it is smaller than the sum of its proper divisors (980088872).

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

812538328 is a wasteful number, since it uses less digits than its factorization.

812538328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840 (or 1836 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The square root of 812538328 is about 28505.0579371451. The cubic root of 812538328 is about 933.1424617621.

The spelling of 812538328 in words is "eight hundred twelve million, five hundred thirty-eight thousand, three hundred twenty-eight".