12816408 has 64 divisors (see below), whose sum is σ = 35798400. Its totient is φ = 3790080.

The previous prime is 12816389. The next prime is 12816409. The reversal of 12816408 is 80461821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12816409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10788 + ... + 11916.

It is an arithmetic number, because the mean of its divisors is an integer number (559350).

Almost surely, 2^12816408 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 12816408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17899200).

12816408 is an abundant number, since it is smaller than the sum of its proper divisors (22981992).

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

12816408 is a wasteful number, since it uses less digits than its factorization.

12816408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 1188 counting only the distinct ones).

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

The square root of 12816408 is about 3580.0011173183. The cubic root of 12816408 is about 234.0213290515.

The spelling of 12816408 in words is "twelve million, eight hundred sixteen thousand, four hundred eight".