13190887 has 4 divisors (see below), whose sum is σ = 13199760. Its totient is φ = 13182016.

The previous prime is 13190873. The next prime is 13190897. The reversal of 13190887 is 78809131.

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 a de Polignac number, because none of the positive numbers 2^k-13190887 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 (13190897) 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, 1603 + ... + 5380.

It is an arithmetic number, because the mean of its divisors is an integer number (3299940).

Almost surely, 2^13190887 is an apocalyptic number.

13190887 is a deficient number, since it is larger than the sum of its proper divisors (8873).

13190887 is an equidigital number, since it uses as much as digits as its factorization.

13190887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8872.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 13190887 is about 3631.9260730362. The cubic root of 13190887 is about 236.2787511084.

The spelling of 13190887 in words is "thirteen million, one hundred ninety thousand, eight hundred eighty-seven".