13324520 has 48 divisors (see below), whose sum is σ = 32965380. Its totient is φ = 4843520.

The previous prime is 13324469. The next prime is 13324523. The reversal of 13324520 is 2542331.

13324520 = 270² + 271² + ... + 390².

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12859396 + 465124 = 3586^2 + 682^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13324492 and 13324501.

It is not an unprimeable number, because it can be changed into a prime (13324523) 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 11 ways as a sum of consecutive naturals, for example, 3464 + ... + 6216.

Almost surely, 2^13324520 is an apocalyptic number.

13324520 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 13324520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16482690).

13324520 is an abundant number, since it is smaller than the sum of its proper divisors (19640860).

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

13324520 is a wasteful number, since it uses less digits than its factorization.

13324520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786 (or 2771 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 13324520 is about 3650.2767018406. The cubic root of 13324520 is about 237.0739619729.

Adding to 13324520 its reverse (2542331), we get a palindrome (15866851).

The spelling of 13324520 in words is "thirteen million, three hundred twenty-four thousand, five hundred twenty".