13188087 has 12 divisors (see below), whose sum is σ = 20781384. Its totient is φ = 7992720.

The previous prime is 13188067. The next prime is 13188121. The reversal of 13188087 is 78088131.

It is not a de Polignac number, because 13188087 - 2¹⁸ = 12925943 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13188067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66508 + ... + 66705.

It is an arithmetic number, because the mean of its divisors is an integer number (1731782).

Almost surely, 2^13188087 is an apocalyptic number.

13188087 is a deficient number, since it is larger than the sum of its proper divisors (7593297).

13188087 is a wasteful number, since it uses less digits than its factorization.

13188087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133230 (or 133227 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 36.

The square root of 13188087 is about 3631.5405821772. The cubic root of 13188087 is about 236.2620318051.

The spelling of 13188087 in words is "thirteen million, one hundred eighty-eight thousand, eighty-seven".