22203272 has 48 divisors (see below), whose sum is σ = 52165260. Its totient is φ = 8781696.

The previous prime is 22203271. The next prime is 22203323. The reversal of 22203272 is 27230222.

It can be written as a sum of positive squares in 2 ways, for example, as 21473956 + 729316 = 4634^2 + 854^2 .

It is not an unprimeable number, because it can be changed into a prime (22203271) 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 11 ways as a sum of consecutive naturals, for example, 2918 + ... + 7274.

Almost surely, 2^22203272 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 22203272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26082630).

22203272 is an abundant number, since it is smaller than the sum of its proper divisors (29961988).

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

22203272 is a wasteful number, since it uses less digits than its factorization.

22203272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390 (or 4379 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 22203272 is about 4712.0348046253. The cubic root of 22203272 is about 281.0642828579.

Adding to 22203272 its reverse (27230222), we get a palindrome (49433494).

The spelling of 22203272 in words is "twenty-two million, two hundred three thousand, two hundred seventy-two".