13523224 has 32 divisors (see below), whose sum is σ = 29791440. Its totient is φ = 5673600.

The previous prime is 13523219. The next prime is 13523227. The reversal of 13523224 is 42232531.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 13523195 and 13523204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13523227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4767 + ... + 7054.

Almost surely, 2^13523224 is an apocalyptic number.

It is an amenable number.

13523224 is an abundant number, since it is smaller than the sum of its proper divisors (16268216).

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

13523224 is a wasteful number, since it uses less digits than its factorization.

13523224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11851 (or 11847 counting only the distinct ones).

The product of its digits is 1440, while the sum is 22.

The square root of 13523224 is about 3677.3936422417. The cubic root of 13523224 is about 238.2466195811.

Adding to 13523224 its reverse (42232531), we get a palindrome (55755755).

The spelling of 13523224 in words is "thirteen million, five hundred twenty-three thousand, two hundred twenty-four".