12988188 has 30 divisors (see below), whose sum is σ = 33954536. Its totient is φ = 4329288.

The previous prime is 12988159. The next prime is 12988207. The reversal of 12988188 is 88188921.

12988188 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 19720 + ... + 20367.

Almost surely, 2^12988188 is an apocalyptic number.

12988188 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12988188 is an abundant number, since it is smaller than the sum of its proper divisors (20966348).

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

12988188 is a wasteful number, since it uses less digits than its factorization.

12988188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40103 (or 40092 counting only the distinct ones).

The product of its digits is 73728, while the sum is 45.

The square root of 12988188 is about 3603.9128735307. The cubic root of 12988188 is about 235.0622318964.

The spelling of 12988188 in words is "twelve million, nine hundred eighty-eight thousand, one hundred eighty-eight".