22224040 has 32 divisors (see below), whose sum is σ = 50508360. Its totient is φ = 8800000.

The previous prime is 22224031. The next prime is 22224071. The reversal of 22224040 is 4042222.

It can be written as a sum of positive squares in 4 ways, for example, as 21696964 + 527076 = 4658^2 + 726^2 .

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, 1290 + ... + 6790.

Almost surely, 2^22224040 is an apocalyptic number.

22224040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22224040 is an abundant number, since it is smaller than the sum of its proper divisors (28284320).

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

22224040 is a wasteful number, since it uses less digits than its factorization.

22224040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5613 (or 5609 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 22224040 is about 4714.2380084166. The cubic root of 22224040 is about 281.1518874240.

Adding to 22224040 its reverse (4042222), we get a palindrome (26266262).

The spelling of 22224040 in words is "twenty-two million, two hundred twenty-four thousand, forty".