12432216 has 32 divisors (see below), whose sum is σ = 31170240. Its totient is φ = 4132128.

The previous prime is 12432193. The next prime is 12432221. The reversal of 12432216 is 61223421.

It is a super-3 number, since 3×12432216³ (a number of 22 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 12432192 and 12432201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12655 + ... + 13601.

It is an arithmetic number, because the mean of its divisors is an integer number (974070).

Almost surely, 2^12432216 is an apocalyptic number.

It is an amenable number.

12432216 is an abundant number, since it is smaller than the sum of its proper divisors (18738024).

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

12432216 is a wasteful number, since it uses less digits than its factorization.

12432216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503 (or 1499 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 12432216 is about 3525.9347696746. The cubic root of 12432216 is about 231.6591804998.

Adding to 12432216 its reverse (61223421), we get a palindrome (73655637).

The spelling of 12432216 in words is "twelve million, four hundred thirty-two thousand, two hundred sixteen".