12216288 has 120 divisors (see below), whose sum is σ = 38116008. Its totient is φ = 3424512.

The previous prime is 12216283. The next prime is 12216299. The reversal of 12216288 is 88261221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 230470 + ... + 230522.

Almost surely, 2^12216288 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12216288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19058004).

12216288 is an abundant number, since it is smaller than the sum of its proper divisors (25899720).

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

12216288 is an frugal number, since it uses more digits than its factorization.

12216288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 65 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 12216288 is about 3495.1806820249. The cubic root of 12216288 is about 230.3101549770.

The spelling of 12216288 in words is "twelve million, two hundred sixteen thousand, two hundred eighty-eight".