812584122 has 64 divisors (see below), whose sum is σ = 1970749440. Its totient is φ = 218048256.

The previous prime is 812584109. The next prime is 812584133. The reversal of 812584122 is 221485218.

812584122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461079 + ... + 462837.

It is an arithmetic number, because the mean of its divisors is an integer number (30792960).

Almost surely, 2^812584122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812584122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985374720).

812584122 is an abundant number, since it is smaller than the sum of its proper divisors (1158165318).

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

812584122 is a wasteful number, since it uses less digits than its factorization.

812584122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435.

The product of its digits is 10240, while the sum is 33.

The square root of 812584122 is about 28505.8611867805. The cubic root of 812584122 is about 933.1599918164.

The spelling of 812584122 in words is "eight hundred twelve million, five hundred eighty-four thousand, one hundred twenty-two".