13393287 has 6 divisors (see below), whose sum is σ = 19345872. Its totient is φ = 8928852.

The previous prime is 13393283. The next prime is 13393301. The reversal of 13393287 is 78239331.

It is a happy number.

It is not a de Polignac number, because 13393287 - 2² = 13393283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13393283) 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 5 ways as a sum of consecutive naturals, for example, 744063 + ... + 744080.

It is an arithmetic number, because the mean of its divisors is an integer number (3224312).

Almost surely, 2^13393287 is an apocalyptic number.

13393287 is a deficient number, since it is larger than the sum of its proper divisors (5952585).

13393287 is a wasteful number, since it uses less digits than its factorization.

13393287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488149 (or 1488146 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 13393287 is about 3659.6840027522. The cubic root of 13393287 is about 237.4811035751.

The spelling of 13393287 in words is "thirteen million, three hundred ninety-three thousand, two hundred eighty-seven".