812022 has 32 divisors (see below), whose sum is σ = 1814400. Its totient is φ = 240768.

The previous prime is 812011. The next prime is 812033. The reversal of 812022 is 220218.

812022 = 74² + 75² + ... + 141².

It is an interprime number because it is at equal distance from previous prime (812011) and next prime (812033).

It is a junction number, because it is equal to n+sod(n) for n = 811992 and 812010.

It is a congruent number.

It is an unprimeable number.

812022 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1729 + ... + 2147.

It is an arithmetic number, because the mean of its divisors is an integer number (56700).

2⁸¹²⁰²² is an apocalyptic number.

812022 is an abundant number, since it is smaller than the sum of its proper divisors (1002378).

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

812022 is a wasteful number, since it uses less digits than its factorization.

812022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 812022 is about 901.1226331638. The cubic root of 812022 is about 93.2944764556.

The spelling of 812022 in words is "eight hundred twelve thousand, twenty-two".