13303320 has 64 divisors (see below), whose sum is σ = 40608000. Its totient is φ = 3485568.

The previous prime is 13303289. The next prime is 13303321. The reversal of 13303320 is 2330331.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13303320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13303321) 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 15 ways as a sum of consecutive naturals, for example, 6141 + ... + 8019.

It is an arithmetic number, because the mean of its divisors is an integer number (634500).

Almost surely, 2^13303320 is an apocalyptic number.

13303320 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 13303320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20304000).

13303320 is an abundant number, since it is smaller than the sum of its proper divisors (27304680).

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

13303320 is a wasteful number, since it uses less digits than its factorization.

13303320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1948 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 13303320 is about 3647.3716564123. The cubic root of 13303320 is about 236.9481629227.

Adding to 13303320 its reverse (2330331), we get a palindrome (15633651).

The spelling of 13303320 in words is "thirteen million, three hundred three thousand, three hundred twenty".