13185320 has 64 divisors (see below), whose sum is σ = 31190400. Its totient is φ = 5011200.

The previous prime is 13185317. The next prime is 13185349. The reversal of 13185320 is 2358131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87245 + ... + 87395.

It is an arithmetic number, because the mean of its divisors is an integer number (487350).

Almost surely, 2^13185320 is an apocalyptic number.

13185320 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 13185320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15595200).

13185320 is an abundant number, since it is smaller than the sum of its proper divisors (18005080).

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

13185320 is a wasteful number, since it uses less digits than its factorization.

13185320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 13185320 is about 3631.1595943996. The cubic root of 13185320 is about 236.2455072259.

The spelling of 13185320 in words is "thirteen million, one hundred eighty-five thousand, three hundred twenty".