323222220 has 144 divisors (see below), whose sum is σ = 1034534592. Its totient is φ = 81523200.

The previous prime is 323222219. The next prime is 323222227. The reversal of 323222220 is 22222323.

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

It is a junction number, because it is equal to n+sod(n) for n = 323222193 and 323222202.

It is not an unprimeable number, because it can be changed into a prime (323222227) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 417754 + ... + 418526.

It is an arithmetic number, because the mean of its divisors is an integer number (7184268).

Almost surely, 2^323222220 is an apocalyptic number.

323222220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 323222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (517267296).

323222220 is an abundant number, since it is smaller than the sum of its proper divisors (711312372).

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

323222220 is a wasteful number, since it uses less digits than its factorization.

323222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912 (or 907 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 323222220 is about 17978.3820184131. The cubic root of 323222220 is about 686.2785151439.

Adding to 323222220 its reverse (22222323), we get a palindrome (345444543).

It can be divided in two parts, 3232 and 22220, that added together give a palindrome (25452).

The spelling of 323222220 in words is "three hundred twenty-three million, two hundred twenty-two thousand, two hundred twenty".