318228 has 24 divisors (see below), whose sum is σ = 775488. Its totient is φ = 101376.

The previous prime is 318211. The next prime is 318229. The reversal of 318228 is 822813.

It is a junction number, because it is equal to n+sod(n) for n = 318198 and 318207.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318228.

It is not an unprimeable number, because it can be changed into a prime (318229) by changing a digit.

318228 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, 301 + ... + 852.

It is an arithmetic number, because the mean of its divisors is an integer number (32312).

2³¹⁸²²⁸ is an apocalyptic number.

It is an amenable number.

318228 is an abundant number, since it is smaller than the sum of its proper divisors (457260).

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

318228 is a wasteful number, since it uses less digits than its factorization.

318228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183 (or 1181 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 318228 is about 564.1170091391. The cubic root of 318228 is about 68.2725508810.

The spelling of 318228 in words is "three hundred eighteen thousand, two hundred twenty-eight".