322218 has 56 divisors (see below), whose sum is σ = 826308. Its totient is φ = 93312.

The previous prime is 322213. The next prime is 322229. The reversal of 322218 is 812223.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 321489 + 729 = 567^2 + 27^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a d-powerful number, because it can be written as 3¹⁰ + 2⁹ + 2¹⁷ + 2¹⁷ + 1 + 8³ .

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 322218.

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 322218.

It is not an unprimeable number, because it can be changed into a prime (322213) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 18946 + ... + 18962.

2³²²²¹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 322218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413154).

322218 is an abundant number, since it is smaller than the sum of its proper divisors (504090).

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

322218 is a wasteful number, since it uses less digits than its factorization.

322218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50 (or 35 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 322218 is about 567.6424931240. The cubic root of 322218 is about 68.5567044278.

It can be divided in two parts, 3222 and 18, that added together give a triangular number (3240 = T₈₀).

The spelling of 322218 in words is "three hundred twenty-two thousand, two hundred eighteen".