22023312 has 20 divisors (see below), whose sum is σ = 56893680. Its totient is φ = 7341088.

The previous prime is 22023301. The next prime is 22023319. The reversal of 22023312 is 21332022.

It is a junction number, because it is equal to n+sod(n) for n = 22023291 and 22023300.

It is not an unprimeable number, because it can be changed into a prime (22023319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 229362 + ... + 229457.

It is an arithmetic number, because the mean of its divisors is an integer number (2844684).

Almost surely, 2^22023312 is an apocalyptic number.

It is an amenable number.

22023312 is an abundant number, since it is smaller than the sum of its proper divisors (34870368).

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

22023312 is a wasteful number, since it uses less digits than its factorization.

22023312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458830 (or 458824 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 22023312 is about 4692.9001694048. The cubic root of 22023312 is about 280.3028695538.

Adding to 22023312 its reverse (21332022), we get a palindrome (43355334).

It can be divided in two parts, 220 and 23312, that added together give a palindrome (23532).

The spelling of 22023312 in words is "twenty-two million, twenty-three thousand, three hundred twelve".