12408216 has 32 divisors (see below), whose sum is σ = 32654400. Its totient is φ = 3918240.

The previous prime is 12408211. The next prime is 12408223. The reversal of 12408216 is 61280421.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12408211) 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 7 ways as a sum of consecutive naturals, for example, 13150 + ... + 14061.

It is an arithmetic number, because the mean of its divisors is an integer number (1020450).

Almost surely, 2^12408216 is an apocalyptic number.

It is an amenable number.

12408216 is an abundant number, since it is smaller than the sum of its proper divisors (20246184).

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

12408216 is a wasteful number, since it uses less digits than its factorization.

12408216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27239 (or 27235 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 12408216 is about 3522.5297727628. The cubic root of 12408216 is about 231.5100142300.

Adding to 12408216 its reverse (61280421), we get a palindrome (73688637).

The spelling of 12408216 in words is "twelve million, four hundred eight thousand, two hundred sixteen".