12987508 has 12 divisors (see below), whose sum is σ = 23002560. Its totient is φ = 6415352.

The previous prime is 12987497. The next prime is 12987509. The reversal of 12987508 is 80578921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12987509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19228 + ... + 19891.

It is an arithmetic number, because the mean of its divisors is an integer number (1916880).

Almost surely, 2^12987508 is an apocalyptic number.

It is an amenable number.

12987508 is a deficient number, since it is larger than the sum of its proper divisors (10015052).

12987508 is a wasteful number, since it uses less digits than its factorization.

12987508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39206 (or 39204 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 40.

The square root of 12987508 is about 3603.8185303925. The cubic root of 12987508 is about 235.0581295764.

The spelling of 12987508 in words is "twelve million, nine hundred eighty-seven thousand, five hundred eight".