22543224 has 64 divisors (see below), whose sum is σ = 65111040. Its totient is φ = 6428160.

The previous prime is 22543219. The next prime is 22543259. The reversal of 22543224 is 42234522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 22543194 and 22543203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1977 + ... + 6999.

It is an arithmetic number, because the mean of its divisors is an integer number (1017360).

Almost surely, 2^22543224 is an apocalyptic number.

22543224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22543224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32555520).

22543224 is an abundant number, since it is smaller than the sum of its proper divisors (42567816).

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

22543224 is a wasteful number, since it uses less digits than its factorization.

22543224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060 (or 5056 counting only the distinct ones).

The product of its digits is 3840, while the sum is 24.

The square root of 22543224 is about 4747.9705138090. The cubic root of 22543224 is about 282.4914723194.

Adding to 22543224 its reverse (42234522), we get a palindrome (64777746).

It can be divided in two parts, 225432 and 24, that added together give a triangular number (225456 = T₆₇₁).

The spelling of 22543224 in words is "twenty-two million, five hundred forty-three thousand, two hundred twenty-four".