22224620 has 24 divisors (see below), whose sum is σ = 50915088. Its totient is φ = 8081600.

The previous prime is 22224617. The next prime is 22224667. The reversal of 22224620 is 2642222.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 22224592 and 22224601.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50291 + ... + 50730.

It is an arithmetic number, because the mean of its divisors is an integer number (2121462).

Almost surely, 2^22224620 is an apocalyptic number.

22224620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22224620 is an abundant number, since it is smaller than the sum of its proper divisors (28690468).

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

22224620 is a wasteful number, since it uses less digits than its factorization.

22224620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101041 (or 101039 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22224620 is about 4714.2995237893. The cubic root of 22224620 is about 281.1543332241.

Adding to 22224620 its reverse (2642222), we get a palindrome (24866842).

It can be divided in two parts, 222 and 24620, that added together give a palindrome (24842).

The spelling of 22224620 in words is "twenty-two million, two hundred twenty-four thousand, six hundred twenty".