12662816 has 48 divisors (see below), whose sum is σ = 26762400. Its totient is φ = 5879808.

The previous prime is 12662803. The next prime is 12662827. The reversal of 12662816 is 61826621.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35696 + ... + 36048.

It is an arithmetic number, because the mean of its divisors is an integer number (557550).

Almost surely, 2^12662816 is an apocalyptic number.

12662816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12662816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13381200).

12662816 is an abundant number, since it is smaller than the sum of its proper divisors (14099584).

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

12662816 is a wasteful number, since it uses less digits than its factorization.

12662816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 433 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 12662816 is about 3558.4850709255. The cubic root of 12662816 is about 233.0827314013.

The spelling of 12662816 in words is "twelve million, six hundred sixty-two thousand, eight hundred sixteen".