22333320 has 160 divisors (see below), whose sum is σ = 76970520. Its totient is φ = 5806080.

The previous prime is 22333313. The next prime is 22333321. The reversal of 22333320 is 2333322.

It can be written as a sum of positive squares in 4 ways, for example, as 4743684 + 17589636 = 2178^2 + 4194^2 .

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 = 22333293 and 22333302.

It is not an unprimeable number, because it can be changed into a prime (22333321) 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 39 ways as a sum of consecutive naturals, for example, 197584 + ... + 197696.

Almost surely, 2^22333320 is an apocalyptic number.

22333320 is a gapful number since it is divisible by the number (20) 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 22333320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38485260).

22333320 is an abundant number, since it is smaller than the sum of its proper divisors (54637200).

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

22333320 is a wasteful number, since it uses less digits than its factorization.

22333320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 18.

The square root of 22333320 is about 4725.8142155612. The cubic root of 22333320 is about 281.6119606339.

Adding to 22333320 its reverse (2333322), we get a palindrome (24666642).

The spelling of 22333320 in words is "twenty-two million, three hundred thirty-three thousand, three hundred twenty".