812256 has 24 divisors (see below), whose sum is σ = 2132424. Its totient is φ = 270720.

The previous prime is 812249. The next prime is 812257. The reversal of 812256 is 652218.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812257) 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, 4135 + ... + 4326.

It is an arithmetic number, because the mean of its divisors is an integer number (88851).

2⁸¹²²⁵⁶ is an apocalyptic number.

It is an amenable number.

812256 is an abundant number, since it is smaller than the sum of its proper divisors (1320168).

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

812256 is a wasteful number, since it uses less digits than its factorization.

812256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8474 (or 8466 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 812256 is about 901.2524618552. The cubic root of 812256 is about 93.3034371368.

The spelling of 812256 in words is "eight hundred twelve thousand, two hundred fifty-six".