22230312 has 64 divisors (see below), whose sum is σ = 61279680. Its totient is φ = 6676992.

The previous prime is 22230311. The next prime is 22230343. The reversal of 22230312 is 21303222.

It is a junction number, because it is equal to n+sod(n) for n = 22230291 and 22230300.

It is not an unprimeable number, because it can be changed into a prime (22230311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12588 + ... + 14244.

It is an arithmetic number, because the mean of its divisors is an integer number (957495).

Almost surely, 2^22230312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22230312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30639840).

22230312 is an abundant number, since it is smaller than the sum of its proper divisors (39049368).

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

22230312 is a wasteful number, since it uses less digits than its factorization.

22230312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1722 (or 1718 counting only the distinct ones).

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

The square root of 22230312 is about 4714.9031803421. The cubic root of 22230312 is about 281.1783335424.

Adding to 22230312 its reverse (21303222), we get a palindrome (43533534).

The spelling of 22230312 in words is "twenty-two million, two hundred thirty thousand, three hundred twelve".