22504230 has 144 divisors (see below), whose sum is σ = 70855200. Its totient is φ = 5143824.

The previous prime is 22504217. The next prime is 22504253. The reversal of 22504230 is 3240522.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3214887 + ... + 3214893.

It is an arithmetic number, because the mean of its divisors is an integer number (492050).

Almost surely, 2^22504230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22504230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35427600).

22504230 is an abundant number, since it is smaller than the sum of its proper divisors (48350970).

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

22504230 is an frugal number, since it uses more digits than its factorization.

22504230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 22504230 is about 4743.8623504482. The cubic root of 22504230 is about 282.3284990331.

Adding to 22504230 its reverse (3240522), we get a palindrome (25744752).

The spelling of 22504230 in words is "twenty-two million, five hundred four thousand, two hundred thirty".