12386988 has 18 divisors (see below), whose sum is σ = 31311644. Its totient is φ = 4128984.

The previous prime is 12386987. The next prime is 12386989. The reversal of 12386988 is 88968321.

It is an interprime number because it is at equal distance from previous prime (12386987) and next prime (12386989).

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (12386987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 172006 + ... + 172077.

Almost surely, 2^12386988 is an apocalyptic number.

12386988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12386988 is an abundant number, since it is smaller than the sum of its proper divisors (18924656).

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

12386988 is a wasteful number, since it uses less digits than its factorization.

12386988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344093 (or 344088 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 12386988 is about 3519.5153075388. The cubic root of 12386988 is about 231.3779162764.

The spelling of 12386988 in words is "twelve million, three hundred eighty-six thousand, nine hundred eighty-eight".