22033312 has 96 divisors (see below), whose sum is σ = 54190080. Its totient is φ = 8605440.

The previous prime is 22033303. The next prime is 22033313. The reversal of 22033312 is 21333022.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (22033313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131853 + ... + 132019.

It is an arithmetic number, because the mean of its divisors is an integer number (564480).

Almost surely, 2^22033312 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 22033312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27095040).

22033312 is an abundant number, since it is smaller than the sum of its proper divisors (32156768).

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

22033312 is a wasteful number, since it uses less digits than its factorization.

22033312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 22033312 is about 4693.9654877300. The cubic root of 22033312 is about 280.3452883106.

Adding to 22033312 its reverse (21333022), we get a palindrome (43366334).

The spelling of 22033312 in words is "twenty-two million, thirty-three thousand, three hundred twelve".