13306287 has 4 divisors (see below), whose sum is σ = 17741720. Its totient is φ = 8870856.

The previous prime is 13306283. The next prime is 13306303. The reversal of 13306287 is 78260331.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13306287 - 2² = 13306283 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 (13306283) 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 3 ways as a sum of consecutive naturals, for example, 2217712 + ... + 2217717.

It is an arithmetic number, because the mean of its divisors is an integer number (4435430).

Almost surely, 2^13306287 is an apocalyptic number.

13306287 is a deficient number, since it is larger than the sum of its proper divisors (4435433).

13306287 is an equidigital number, since it uses as much as digits as its factorization.

13306287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435432.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 13306287 is about 3647.7783649778. The cubic root of 13306287 is about 236.9657768953.

The spelling of 13306287 in words is "thirteen million, three hundred six thousand, two hundred eighty-seven".