12138384 has 40 divisors (see below), whose sum is σ = 32092192. Its totient is φ = 3951360.

The previous prime is 12138383. The next prime is 12138389. The reversal of 12138384 is 48383121.

12138384 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12138384² = 294680732262912, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (12138383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 877 + ... + 5004.

Almost surely, 2^12138384 is an apocalyptic number.

It is an amenable number.

12138384 is an abundant number, since it is smaller than the sum of its proper divisors (19953808).

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

12138384 is a wasteful number, since it uses less digits than its factorization.

12138384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935 (or 5929 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 12138384 is about 3484.0183696416. The cubic root of 12138384 is about 229.8195433920.

It can be divided in two parts, 121 and 38384, that multiplied together give a palindrome (4644464).

The spelling of 12138384 in words is "twelve million, one hundred thirty-eight thousand, three hundred eighty-four".