12587388 has 36 divisors (see below), whose sum is σ = 32287080. Its totient is φ = 3813920.

The previous prime is 12587381. The next prime is 12587401. The reversal of 12587388 is 88378521.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12587381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2883 + ... + 5786.

Almost surely, 2^12587388 is an apocalyptic number.

It is an amenable number.

12587388 is an abundant number, since it is smaller than the sum of its proper divisors (19699692).

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

12587388 is a wasteful number, since it uses less digits than its factorization.

12587388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8698 (or 8685 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 12587388 is about 3547.8709108422. The cubic root of 12587388 is about 232.6190117952.

It can be divided in two parts, 1258 and 7388, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 12587388 in words is "twelve million, five hundred eighty-seven thousand, three hundred eighty-eight".