812210 has 32 divisors (see below), whose sum is σ = 1717632. Its totient is φ = 270720.

The previous prime is 812191. The next prime is 812213. The reversal of 812210 is 12218.

812210 = 135² + 136² + ... + 169².

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2729 + ... + 3011.

It is an arithmetic number, because the mean of its divisors is an integer number (53676).

2⁸¹²²¹⁰ is an apocalyptic number.

812210 is an abundant number, since it is smaller than the sum of its proper divisors (905422).

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

812210 is a wasteful number, since it uses less digits than its factorization.

812210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 812210 is about 901.2269414526. The cubic root of 812210 is about 93.3016757713.

Adding to 812210 its reverse (12218), we get a palindrome (824428).

The spelling of 812210 in words is "eight hundred twelve thousand, two hundred ten".