22620330 has 64 divisors (see below), whose sum is σ = 60768000. Its totient is φ = 5987520.

The previous prime is 22620289. The next prime is 22620331. The reversal of 22620330 is 3302622.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22620331) 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 31 ways as a sum of consecutive naturals, for example, 53520 + ... + 53940.

It is an arithmetic number, because the mean of its divisors is an integer number (949500).

Almost surely, 2^22620330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22620330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30384000).

22620330 is an abundant number, since it is smaller than the sum of its proper divisors (38147670).

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

22620330 is a wasteful number, since it uses less digits than its factorization.

22620330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 22620330 is about 4756.0834727746. The cubic root of 22620330 is about 282.8131802330.

Adding to 22620330 its reverse (3302622), we get a palindrome (25922952).

The spelling of 22620330 in words is "twenty-two million, six hundred twenty thousand, three hundred thirty".