22323222 has 32 divisors (see below), whose sum is σ = 50110560. Its totient is φ = 7365600.

The previous prime is 22323199. The next prime is 22323239. The reversal of 22323222 is 22232322.

It is a super-3 number, since 3×22323222³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22323195 and 22323204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3408 + ... + 7500.

It is an arithmetic number, because the mean of its divisors is an integer number (1565955).

Almost surely, 2^22323222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22323222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25055280).

22323222 is an abundant number, since it is smaller than the sum of its proper divisors (27787338).

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

22323222 is a wasteful number, since it uses less digits than its factorization.

22323222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205 (or 4199 counting only the distinct ones).

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

The square root of 22323222 is about 4724.7457074429. The cubic root of 22323222 is about 281.5695106641.

Adding to 22323222 its reverse (22232322), we get a palindrome (44555544).

It can be divided in two parts, 2232322 and 2, that multiplied together give a palindrome (4464644).

The spelling of 22323222 in words is "twenty-two million, three hundred twenty-three thousand, two hundred twenty-two".