13206287 has 4 divisors (see below), whose sum is σ = 13216056. Its totient is φ = 13196520.

The previous prime is 13206269. The next prime is 13206307. The reversal of 13206287 is 78260231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13206287 - 2²⁰ = 12157711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13206227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2453 + ... + 5694.

It is an arithmetic number, because the mean of its divisors is an integer number (3304014).

Almost surely, 2^13206287 is an apocalyptic number.

13206287 is a deficient number, since it is larger than the sum of its proper divisors (9769).

13206287 is an equidigital number, since it uses as much as digits as its factorization.

13206287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9768.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 13206287 is about 3634.0455418170. The cubic root of 13206287 is about 236.3706650097.

The spelling of 13206287 in words is "thirteen million, two hundred six thousand, two hundred eighty-seven".