13206320 has 20 divisors (see below), whose sum is σ = 30704880. Its totient is φ = 5282496.

The previous prime is 13206307. The next prime is 13206329. The reversal of 13206320 is 2360231.

It is a tau number, because it is divible by the number of its divisors (20).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (13206329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82460 + ... + 82619.

It is an arithmetic number, because the mean of its divisors is an integer number (1535244).

Almost surely, 2^13206320 is an apocalyptic number.

13206320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13206320 is an abundant number, since it is smaller than the sum of its proper divisors (17498560).

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

13206320 is a wasteful number, since it uses less digits than its factorization.

13206320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165092 (or 165086 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 13206320 is about 3634.0500822086. The cubic root of 13206320 is about 236.3708618914.

Adding to 13206320 its reverse (2360231), we get a palindrome (15566551).

The spelling of 13206320 in words is "thirteen million, two hundred six thousand, three hundred twenty".