13445224 has 16 divisors (see below), whose sum is σ = 27149220. Its totient is φ = 6205440.

The previous prime is 13445219. The next prime is 13445231. The reversal of 13445224 is 42254431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13176900 + 268324 = 3630^2 + 518^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64537 + ... + 64744.

Almost surely, 2^13445224 is an apocalyptic number.

It is an amenable number.

13445224 is an abundant number, since it is smaller than the sum of its proper divisors (13703996).

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

13445224 is a wasteful number, since it uses less digits than its factorization.

13445224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129300 (or 129296 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 13445224 is about 3666.7729681561. The cubic root of 13445224 is about 237.7876787316.

Adding to 13445224 its reverse (42254431), we get a palindrome (55699655).

The spelling of 13445224 in words is "thirteen million, four hundred forty-five thousand, two hundred twenty-four".