818228 has 6 divisors (see below), whose sum is σ = 1431906. Its totient is φ = 409112.

The previous prime is 818219. The next prime is 818231. The reversal of 818228 is 822818.

818228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 813604 + 4624 = 902^2 + 68^2 .

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 818228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102275 + ... + 102282.

It is an arithmetic number, because the mean of its divisors is an integer number (238651).

2⁸¹⁸²²⁸ is an apocalyptic number.

It is an amenable number.

818228 is a deficient number, since it is larger than the sum of its proper divisors (613678).

818228 is a wasteful number, since it uses less digits than its factorization.

818228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204561 (or 204559 counting only the distinct ones).

The product of its digits is 2048, while the sum is 29.

The square root of 818228 is about 904.5595613336. The cubic root of 818228 is about 93.5315458771.

The spelling of 818228 in words is "eight hundred eighteen thousand, two hundred twenty-eight".