12987532 has 6 divisors (see below), whose sum is σ = 22728188. Its totient is φ = 6493764.

The previous prime is 12987523. The next prime is 12987547. The reversal of 12987532 is 23578921.

It is a junction number, because it is equal to n+sod(n) for n = 12987491 and 12987500.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1623438 + ... + 1623445.

Almost surely, 2^12987532 is an apocalyptic number.

It is an amenable number.

12987532 is a deficient number, since it is larger than the sum of its proper divisors (9740656).

12987532 is a wasteful number, since it uses less digits than its factorization.

12987532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246887 (or 3246885 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 12987532 is about 3603.8218601923. The cubic root of 12987532 is about 235.0582743666.

The spelling of 12987532 in words is "twelve million, nine hundred eighty-seven thousand, five hundred thirty-two".