13288209 has 16 divisors (see below), whose sum is σ = 19410624. Its totient is φ = 8019200.

The previous prime is 13288207. The next prime is 13288211. The reversal of 13288209 is 90288231.

It is an interprime number because it is at equal distance from previous prime (13288207) and next prime (13288211).

It is a cyclic number.

It is not a de Polignac number, because 13288209 - 2¹ = 13288207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a self number, because there is not a number n which added to its sum of digits gives 13288209.

It is not an unprimeable number, because it can be changed into a prime (13288207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8557 + ... + 9989.

It is an arithmetic number, because the mean of its divisors is an integer number (1213164).

Almost surely, 2^13288209 is an apocalyptic number.

It is an amenable number.

13288209 is a deficient number, since it is larger than the sum of its proper divisors (6122415).

13288209 is a wasteful number, since it uses less digits than its factorization.

13288209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 13288209 is about 3645.2995761665. The cubic root of 13288209 is about 236.8584138919.

The spelling of 13288209 in words is "thirteen million, two hundred eighty-eight thousand, two hundred nine".