13324240 has 40 divisors (see below), whose sum is σ = 31212288. Its totient is φ = 5289600.

The previous prime is 13324231. The next prime is 13324247. The reversal of 13324240 is 4242331.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13324247) 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 7 ways as a sum of consecutive naturals, for example, 11529 + ... + 12631.

Almost surely, 2^13324240 is an apocalyptic number.

13324240 is a gapful number since it is divisible by the number (10) 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 13324240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15606144).

13324240 is an abundant number, since it is smaller than the sum of its proper divisors (17888048).

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

13324240 is a wasteful number, since it uses less digits than its factorization.

13324240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 13324240 is about 3650.2383483822. The cubic root of 13324240 is about 237.0723013458.

Adding to 13324240 its reverse (4242331), we get a palindrome (17566571).

The spelling of 13324240 in words is "thirteen million, three hundred twenty-four thousand, two hundred forty".