812284 has 12 divisors (see below), whose sum is σ = 1550808. Its totient is φ = 369200.

The previous prime is 812281. The next prime is 812297. The reversal of 812284 is 482218.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9187 + ... + 9274.

It is an arithmetic number, because the mean of its divisors is an integer number (129234).

2⁸¹²²⁸⁴ is an apocalyptic number.

It is an amenable number.

812284 is a deficient number, since it is larger than the sum of its proper divisors (738524).

812284 is a wasteful number, since it uses less digits than its factorization.

812284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18476 (or 18474 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

The square root of 812284 is about 901.2679956594. The cubic root of 812284 is about 93.3045092398.

The spelling of 812284 in words is "eight hundred twelve thousand, two hundred eighty-four".