13324320 has 144 divisors (see below), whose sum is σ = 47960640. Its totient is φ = 3359232.

The previous prime is 13324319. The next prime is 13324361. The reversal of 13324320 is 2342331.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13324293 and 13324302.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27117 + ... + 27603.

It is an arithmetic number, because the mean of its divisors is an integer number (333060).

Almost surely, 2^13324320 is an apocalyptic number.

13324320 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 13324320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23980320).

13324320 is an abundant number, since it is smaller than the sum of its proper divisors (34636320).

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

13324320 is a wasteful number, since it uses less digits than its factorization.

13324320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 13324320 is about 3650.2493065543. The cubic root of 13324320 is about 237.0727758131.

Adding to 13324320 its reverse (2342331), we get a palindrome (15666651).

The spelling of 13324320 in words is "thirteen million, three hundred twenty-four thousand, three hundred twenty".