22303232 has 80 divisors (see below), whose sum is σ = 52377600. Its totient is φ = 9483264.

The previous prime is 22303223. The next prime is 22303249. The reversal of 22303232 is 23230322.

It is a self number, because there is not a number n which added to its sum of digits gives 22303232.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175553 + ... + 175679.

It is an arithmetic number, because the mean of its divisors is an integer number (654720).

Almost surely, 2^22303232 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 22303232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26188800).

22303232 is an abundant number, since it is smaller than the sum of its proper divisors (30074368).

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

22303232 is an frugal number, since it uses more digits than its factorization.

22303232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 136 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 22303232 is about 4722.6297758770. The cubic root of 22303232 is about 281.4854389376.

Adding to 22303232 its reverse (23230322), we get a palindrome (45533554).

The spelling of 22303232 in words is "twenty-two million, three hundred three thousand, two hundred thirty-two".