812712 has 16 divisors (see below), whose sum is σ = 2031840. Its totient is φ = 270896.

The previous prime is 812711. The next prime is 812717. The reversal of 812712 is 217218.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (812711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16908 + ... + 16955.

It is an arithmetic number, because the mean of its divisors is an integer number (126990).

2⁸¹²⁷¹² is an apocalyptic number.

It is an amenable number.

812712 is an abundant number, since it is smaller than the sum of its proper divisors (1219128).

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

812712 is a wasteful number, since it uses less digits than its factorization.

812712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33872 (or 33868 counting only the distinct ones).

The product of its digits is 224, while the sum is 21.

The square root of 812712 is about 901.5054076377. The cubic root of 812712 is about 93.3208940338.

It can be divided in two parts, 8 and 12712, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 812712 in words is "eight hundred twelve thousand, seven hundred twelve".