13226887 has 4 divisors (see below), whose sum is σ = 13549536. Its totient is φ = 12904240.

The previous prime is 13226861. The next prime is 13226897. The reversal of 13226887 is 78862231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78862231 = 7 ⋅11266033.

It is a cyclic number.

It is not a de Polignac number, because 13226887 - 2¹⁵ = 13194119 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 (13226827) 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, 161263 + ... + 161344.

It is an arithmetic number, because the mean of its divisors is an integer number (3387384).

Almost surely, 2^13226887 is an apocalyptic number.

13226887 is a deficient number, since it is larger than the sum of its proper divisors (322649).

13226887 is an equidigital number, since it uses as much as digits as its factorization.

13226887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322648.

The product of its digits is 32256, while the sum is 37.

The square root of 13226887 is about 3636.8787441981. The cubic root of 13226887 is about 236.4935031224.

It can be divided in two parts, 132268 and 87, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 13226887 in words is "thirteen million, two hundred twenty-six thousand, eight hundred eighty-seven".