814220 has 24 divisors (see below), whose sum is σ = 1865808. Its totient is φ = 296000.

The previous prime is 814213. The next prime is 814237. The reversal of 814220 is 22418.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 814220.

It is an unprimeable number.

814220 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 7 ways as a sum of consecutive naturals, for example, 1631 + ... + 2070.

It is an arithmetic number, because the mean of its divisors is an integer number (77742).

2⁸¹⁴²²⁰ is an apocalyptic number.

It is an amenable number.

814220 is an abundant number, since it is smaller than the sum of its proper divisors (1051588).

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

814220 is a wasteful number, since it uses less digits than its factorization.

814220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721 (or 3719 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 814220 is about 902.3413988065. The cubic root of 814220 is about 93.3785778369.

Adding to 814220 its reverse (22418), we get a palindrome (836638).

The spelling of 814220 in words is "eight hundred fourteen thousand, two hundred twenty".