812875272 has 64 divisors (see below), whose sum is σ = 2220825600. Its totient is φ = 245893440.

The previous prime is 812875267. The next prime is 812875291. The reversal of 812875272 is 272578218.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 168429 + ... + 173187.

It is an arithmetic number, because the mean of its divisors is an integer number (34700400).

Almost surely, 2^812875272 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 812875272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1110412800).

812875272 is an abundant number, since it is smaller than the sum of its proper divisors (1407950328).

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

812875272 is a wasteful number, since it uses less digits than its factorization.

812875272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5426 (or 5422 counting only the distinct ones).

The product of its digits is 125440, while the sum is 42.

The square root of 812875272 is about 28510.9675739004. The cubic root of 812875272 is about 933.2714293410.

The spelling of 812875272 in words is "eight hundred twelve million, eight hundred seventy-five thousand, two hundred seventy-two".