12504987 has 18 divisors (see below), whose sum is σ = 19855836. Its totient is φ = 7578120.

The previous prime is 12504977. The next prime is 12505037. The reversal of 12504987 is 78940521.

It is not a de Polignac number, because 12504987 - 2⁶ = 12504923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12504917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4653 + ... + 6830.

It is an arithmetic number, because the mean of its divisors is an integer number (1103102).

Almost surely, 2^12504987 is an apocalyptic number.

12504987 is a deficient number, since it is larger than the sum of its proper divisors (7350849).

12504987 is a wasteful number, since it uses less digits than its factorization.

12504987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11511 (or 11497 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 12504987 is about 3536.2391039069. The cubic root of 12504987 is about 232.1103010485.

The spelling of 12504987 in words is "twelve million, five hundred four thousand, nine hundred eighty-seven".