13287867 has 4 divisors (see below), whose sum is σ = 17717160. Its totient is φ = 8858576.

The previous prime is 13287853. The next prime is 13287877. The reversal of 13287867 is 76878231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76878231 = 3 ⋅25626077.

It is a cyclic number.

It is not a de Polignac number, because 13287867 - 2¹⁶ = 13222331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13287877) 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, 2214642 + ... + 2214647.

It is an arithmetic number, because the mean of its divisors is an integer number (4429290).

Almost surely, 2^13287867 is an apocalyptic number.

13287867 is a deficient number, since it is larger than the sum of its proper divisors (4429293).

13287867 is an equidigital number, since it uses as much as digits as its factorization.

13287867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4429292.

The product of its digits is 112896, while the sum is 42.

The square root of 13287867 is about 3645.2526661399. The cubic root of 13287867 is about 236.8563818581.

The spelling of 13287867 in words is "thirteen million, two hundred eighty-seven thousand, eight hundred sixty-seven".