228822 has 16 divisors (see below), whose sum is σ = 499392. Its totient is φ = 69320.

The previous prime is 228799. The next prime is 228829.

228822 is nontrivially palindromic in base 10.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 228792 and 228801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228829) by changing a digit.

228822 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1668 + ... + 1799.

It is an arithmetic number, because the mean of its divisors is an integer number (31212).

2²²⁸⁸²² is an apocalyptic number.

228822 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

228822 is an abundant number, since it is smaller than the sum of its proper divisors (270570).

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

228822 is a wasteful number, since it uses less digits than its factorization.

228822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3483.

The product of its digits is 1024, while the sum is 24.

The square root of 228822 is about 478.3534258266. The cubic root of 228822 is about 61.1644759449.

The spelling of 228822 in words is "two hundred twenty-eight thousand, eight hundred twenty-two".