812272764 has 24 divisors (see below), whose sum is σ = 1904929488. Its totient is φ = 269382400.

The previous prime is 812272763. The next prime is 812272793. The reversal of 812272764 is 467272218.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812272763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169437 + ... + 174164.

It is an arithmetic number, because the mean of its divisors is an integer number (79372062).

Almost surely, 2^812272764 is an apocalyptic number.

It is an amenable number.

812272764 is an abundant number, since it is smaller than the sum of its proper divisors (1092656724).

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

812272764 is a wasteful number, since it uses less digits than its factorization.

812272764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343805 (or 343803 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 812272764 is about 28500.3993656229. The cubic root of 812272764 is about 933.0407902313.

The spelling of 812272764 in words is "eight hundred twelve million, two hundred seventy-two thousand, seven hundred sixty-four".