812226536 has 48 divisors (see below), whose sum is σ = 1728021120. Its totient is φ = 357271200.

The previous prime is 812226521. The next prime is 812226539. The reversal of 812226536 is 635622218.

812226536 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 = 812226496 and 812226505.

It is not an unprimeable number, because it can be changed into a prime (812226539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16475 + ... + 43541.

It is an arithmetic number, because the mean of its divisors is an integer number (36000440).

Almost surely, 2^812226536 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 812226536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864010560).

812226536 is an abundant number, since it is smaller than the sum of its proper divisors (915794584).

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

812226536 is a wasteful number, since it uses less digits than its factorization.

812226536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27126 (or 27111 counting only the distinct ones).

The product of its digits is 34560, while the sum is 35.

The square root of 812226536 is about 28499.5883479043. The cubic root of 812226536 is about 933.0230895155.

The spelling of 812226536 in words is "eight hundred twelve million, two hundred twenty-six thousand, five hundred thirty-six".