12987516 has 24 divisors (see below), whose sum is σ = 30401280. Its totient is φ = 4315312.

The previous prime is 12987509. The next prime is 12987523. The reversal of 12987516 is 61578921.

12987516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12987509) and next prime (12987523).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2605 + ... + 5723.

It is an arithmetic number, because the mean of its divisors is an integer number (1266720).

Almost surely, 2^12987516 is an apocalyptic number.

It is an amenable number.

12987516 is an abundant number, since it is smaller than the sum of its proper divisors (17413764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12987516 is a wasteful number, since it uses less digits than its factorization.

12987516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473 (or 3471 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 12987516 is about 3603.8196403261. The cubic root of 12987516 is about 235.0581778398.

The spelling of 12987516 in words is "twelve million, nine hundred eighty-seven thousand, five hundred sixteen".