13244224 has 112 divisors (see below), whose sum is σ = 33357312. Its totient is φ = 5087232.

The previous prime is 13244219. The next prime is 13244233. The reversal of 13244224 is 42244231.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 13244195 and 13244204.

It is a congruent number.

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, 281769 + ... + 281815.

Almost surely, 2^13244224 is an apocalyptic number.

13244224 is a gapful number since it is divisible by the number (14) 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 13244224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16678656).

13244224 is an abundant number, since it is smaller than the sum of its proper divisors (20113088).

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

13244224 is a wasteful number, since it uses less digits than its factorization.

13244224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120 (or 110 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 13244224 is about 3639.2614635390. The cubic root of 13244224 is about 236.5967851162.

Adding to 13244224 its reverse (42244231), we get a palindrome (55488455).

The spelling of 13244224 in words is "thirteen million, two hundred forty-four thousand, two hundred twenty-four".