22251232 has 24 divisors (see below), whose sum is σ = 46385136. Its totient is φ = 10470912.

The previous prime is 22251227. The next prime is 22251239. The reversal of 22251232 is 23215222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22251239) 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 3 ways as a sum of consecutive naturals, for example, 19908 + ... + 20995.

It is an arithmetic number, because the mean of its divisors is an integer number (1932714).

Almost surely, 2^22251232 is an apocalyptic number.

It is an amenable number.

22251232 is an abundant number, since it is smaller than the sum of its proper divisors (24133904).

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

22251232 is a wasteful number, since it uses less digits than its factorization.

22251232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40930 (or 40922 counting only the distinct ones).

The product of its digits is 480, while the sum is 19.

The square root of 22251232 is about 4717.1211559594. The cubic root of 22251232 is about 281.2665075414.

Adding to 22251232 its reverse (23215222), we get a palindrome (45466454).

The spelling of 22251232 in words is "twenty-two million, two hundred fifty-one thousand, two hundred thirty-two".