13406224 has 20 divisors (see below), whose sum is σ = 27973036. Its totient is φ = 6187392.

The previous prime is 13406213. The next prime is 13406249. The reversal of 13406224 is 42260431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 12816400 = 768^2 + 3580^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13406195 and 13406204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32019 + ... + 32434.

Almost surely, 2^13406224 is an apocalyptic number.

It is an amenable number.

13406224 is an abundant number, since it is smaller than the sum of its proper divisors (14566812).

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

13406224 is a wasteful number, since it uses less digits than its factorization.

13406224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64474 (or 64468 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 13406224 is about 3661.4510784660. The cubic root of 13406224 is about 237.5575424746.

Adding to 13406224 its reverse (42260431), we get a palindrome (55666655).

The spelling of 13406224 in words is "thirteen million, four hundred six thousand, two hundred twenty-four".