12987368 has 8 divisors (see below), whose sum is σ = 24351330. Its totient is φ = 6493680.

The previous prime is 12987367. The next prime is 12987379. The reversal of 12987368 is 86378921.

12987368 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10484644 + 2502724 = 3238^2 + 1582^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (12987361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811703 + ... + 811718.

Almost surely, 2^12987368 is an apocalyptic number.

It is an amenable number.

12987368 is a deficient number, since it is larger than the sum of its proper divisors (11363962).

12987368 is a wasteful number, since it uses less digits than its factorization.

12987368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623427 (or 1623423 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 12987368 is about 3603.7991064986. The cubic root of 12987368 is about 235.0572849634.

The spelling of 12987368 in words is "twelve million, nine hundred eighty-seven thousand, three hundred sixty-eight".