22224520 has 32 divisors (see below), whose sum is σ = 51621120. Its totient is φ = 8602560.

The previous prime is 22224497. The next prime is 22224539. The reversal of 22224520 is 2542222.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 7722 + ... + 10201.

It is an arithmetic number, because the mean of its divisors is an integer number (1613160).

Almost surely, 2^22224520 is an apocalyptic number.

22224520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22224520 is an abundant number, since it is smaller than the sum of its proper divisors (29396600).

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

22224520 is a wasteful number, since it uses less digits than its factorization.

22224520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17965 (or 17961 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22224520 is about 4714.2889177478. The cubic root of 22224520 is about 281.1539115375.

Adding to 22224520 its reverse (2542222), we get a palindrome (24766742).

It can be divided in two parts, 222 and 24520, that added together give a palindrome (24742).

The spelling of 22224520 in words is "twenty-two million, two hundred twenty-four thousand, five hundred twenty".