12404216 has 32 divisors (see below), whose sum is σ = 26196480. Its totient is φ = 5455200.

The previous prime is 12404201. The next prime is 12404269. The reversal of 12404216 is 61240421.

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, 455 + ... + 5001.

It is an arithmetic number, because the mean of its divisors is an integer number (818640).

Almost surely, 2^12404216 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 12404216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13098240).

12404216 is an abundant number, since it is smaller than the sum of its proper divisors (13792264).

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

12404216 is a wasteful number, since it uses less digits than its factorization.

12404216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4595 (or 4591 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 12404216 is about 3521.9619532300. The cubic root of 12404216 is about 231.4851344895.

Adding to 12404216 its reverse (61240421), we get a palindrome (73644637).

The spelling of 12404216 in words is "twelve million, four hundred four thousand, two hundred sixteen".