22213224 has 64 divisors (see below), whose sum is σ = 67320000. Its totient is φ = 6730560.

The previous prime is 22213183. The next prime is 22213259. The reversal of 22213224 is 42231222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 22213197 and 22213206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2299 + ... + 7050.

It is an arithmetic number, because the mean of its divisors is an integer number (1051875).

Almost surely, 2^22213224 is an apocalyptic number.

22213224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22213224 is an abundant number, since it is smaller than the sum of its proper divisors (45106776).

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

22213224 is a wasteful number, since it uses less digits than its factorization.

22213224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9375 (or 9365 counting only the distinct ones).

The product of its digits is 384, while the sum is 18.

The square root of 22213224 is about 4713.0907056835. The cubic root of 22213224 is about 281.1062696715.

Adding to 22213224 its reverse (42231222), we get a palindrome (64444446).

It can be divided in two parts, 2221 and 3224, that added together give a palindrome (5445).

The spelling of 22213224 in words is "twenty-two million, two hundred thirteen thousand, two hundred twenty-four".