16788816 has 80 divisors (see below), whose sum is σ = 52585920. Its totient is φ = 5086080.

The previous prime is 16788797. The next prime is 16788839. The reversal of 16788816 is 61888761.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2986 + ... + 6518.

It is an arithmetic number, because the mean of its divisors is an integer number (657324).

Almost surely, 2^16788816 is an apocalyptic number.

16788816 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 16788816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26292960).

16788816 is an abundant number, since it is smaller than the sum of its proper divisors (35797104).

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

16788816 is a wasteful number, since it uses less digits than its factorization.

16788816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561 (or 3549 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 16788816 is about 4097.4157709464. The cubic root of 16788816 is about 256.0589870583.

The spelling of 16788816 in words is "sixteen million, seven hundred eighty-eight thousand, eight hundred sixteen".