22224020 has 48 divisors (see below), whose sum is σ = 57445248. Its totient is φ = 7032960.

The previous prime is 22223989. The next prime is 22224023. The reversal of 22224020 is 2042222.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 22223986 and 22224004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22224023) 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 15 ways as a sum of consecutive naturals, for example, 4286 + ... + 7925.

It is an arithmetic number, because the mean of its divisors is an integer number (1196776).

Almost surely, 2^22224020 is an apocalyptic number.

22224020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22224020 is an abundant number, since it is smaller than the sum of its proper divisors (35221228).

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

22224020 is a wasteful number, since it uses less digits than its factorization.

22224020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12240 (or 12238 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22224020 is about 4714.2358871826. The cubic root of 22224020 is about 281.1518030853.

Adding to 22224020 its reverse (2042222), we get a palindrome (24266242).

It can be divided in two parts, 222 and 24020, that added together give a palindrome (24242).

The spelling of 22224020 in words is "twenty-two million, two hundred twenty-four thousand, twenty".