812000 has 96 divisors (see below), whose sum is σ = 2358720. Its totient is φ = 268800.

The previous prime is 811997. The next prime is 812011. The reversal of 812000 is 218.

It is a zygodrome in base 2.

It is a congruent number.

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, 27986 + ... + 28014.

It is an arithmetic number, because the mean of its divisors is an integer number (24570).

2⁸¹²⁰⁰⁰ is an apocalyptic number.

812000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1179360).

812000 is an abundant number, since it is smaller than the sum of its proper divisors (1546720).

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

812000 is a wasteful number, since it uses less digits than its factorization.

812000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61 (or 43 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 812000 is about 901.1104260855. The cubic root of 812000 is about 93.2936339099.

Adding to 812000 its reverse (218), we get a palindrome (812218).

The spelling of 812000 in words is "eight hundred twelve thousand".