812332422 has 128 divisors (see below), whose sum is σ = 2090188800. Its totient is φ = 231271200.

The previous prime is 812332421. The next prime is 812332453. The reversal of 812332422 is 224233218.

812332422 is a `hidden beast` number, since 8 + 1 + 233 + 2 + 422 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812332421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1884547 + ... + 1884977.

It is an arithmetic number, because the mean of its divisors is an integer number (16329600).

Almost surely, 2^812332422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812332422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1045094400).

812332422 is an abundant number, since it is smaller than the sum of its proper divisors (1277856378).

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

812332422 is a wasteful number, since it uses less digits than its factorization.

812332422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639 (or 633 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 812332422 is about 28501.4459633191. The cubic root of 812332422 is about 933.0636323057.

The spelling of 812332422 in words is "eight hundred twelve million, three hundred thirty-two thousand, four hundred twenty-two".