13331424 has 24 divisors (see below), whose sum is σ = 34995240. Its totient is φ = 4443776.

The previous prime is 13331411. The next prime is 13331429. The reversal of 13331424 is 42413331.

It is a tau number, because it is divible by the number of its divisors (24).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 13331424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69339 + ... + 69530.

It is an arithmetic number, because the mean of its divisors is an integer number (1458135).

Almost surely, 2^13331424 is an apocalyptic number.

It is an amenable number.

13331424 is an abundant number, since it is smaller than the sum of its proper divisors (21663816).

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

13331424 is a wasteful number, since it uses less digits than its factorization.

13331424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138882 (or 138874 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 13331424 is about 3651.2222611065. Note that the first 4 decimals coincide. The cubic root of 13331424 is about 237.1149009341.

Adding to 13331424 its reverse (42413331), we get a palindrome (55744755).

The spelling of 13331424 in words is "thirteen million, three hundred thirty-one thousand, four hundred twenty-four".