12987672 has 16 divisors (see below), whose sum is σ = 32469240. Its totient is φ = 4329216.

The previous prime is 12987647. The next prime is 12987707. The reversal of 12987672 is 27678921.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270553 + ... + 270600.

Almost surely, 2^12987672 is an apocalyptic number.

12987672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12987672 is an abundant number, since it is smaller than the sum of its proper divisors (19481568).

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

12987672 is a wasteful number, since it uses less digits than its factorization.

12987672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541162 (or 541158 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 12987672 is about 3603.8412839635. The cubic root of 12987672 is about 235.0591189726.

The spelling of 12987672 in words is "twelve million, nine hundred eighty-seven thousand, six hundred seventy-two".