812296128 has 84 divisors (see below), whose sum is σ = 2500118952. Its totient is φ = 232081920.

The previous prime is 812296127. The next prime is 812296181. The reversal of 812296128 is 821692218.

It is a tau number, because it is divible by the number of its divisors (84).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812296127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33763 + ... + 52578.

Almost surely, 2^812296128 is an apocalyptic number.

It is an amenable number.

812296128 is an abundant number, since it is smaller than the sum of its proper divisors (1687822824).

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

812296128 is a wasteful number, since it uses less digits than its factorization.

812296128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86370 (or 86353 counting only the distinct ones).

The product of its digits is 27648, while the sum is 39.

The square root of 812296128 is about 28500.8092516686. The cubic root of 812296128 is about 933.0497360587.

The spelling of 812296128 in words is "eight hundred twelve million, two hundred ninety-six thousand, one hundred twenty-eight".