12224544 has 48 divisors (see below), whose sum is σ = 33203520. Its totient is φ = 3933440.

The previous prime is 12224521. The next prime is 12224551. The reversal of 12224544 is 44542221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

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

It is a nialpdrome in base 16.

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, 589 + ... + 4979.

It is an arithmetic number, because the mean of its divisors is an integer number (691740).

Almost surely, 2^12224544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12224544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16601760).

12224544 is an abundant number, since it is smaller than the sum of its proper divisors (20978976).

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

12224544 is a wasteful number, since it uses less digits than its factorization.

12224544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433 (or 4425 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 12224544 is about 3496.3615373700. The cubic root of 12224544 is about 230.3620259560.

Adding to 12224544 its reverse (44542221), we get a palindrome (56766765).

The spelling of 12224544 in words is "twelve million, two hundred twenty-four thousand, five hundred forty-four".