12138288 has 20 divisors (see below), whose sum is σ = 31357368. Its totient is φ = 4046080.

The previous prime is 12138277. The next prime is 12138293. The reversal of 12138288 is 88283121.

12138288 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126393 + ... + 126488.

Almost surely, 2^12138288 is an apocalyptic number.

It is an amenable number.

12138288 is an abundant number, since it is smaller than the sum of its proper divisors (19219080).

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

12138288 is a wasteful number, since it uses less digits than its factorization.

12138288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252892 (or 252886 counting only the distinct ones).

The product of its digits is 6144, while the sum is 33.

The square root of 12138288 is about 3484.0045924195. The cubic root of 12138288 is about 229.8189375251.

The spelling of 12138288 in words is "twelve million, one hundred thirty-eight thousand, two hundred eighty-eight".