16776216 has 48 divisors (see below), whose sum is σ = 46551960. Its totient is φ = 5454720.

The previous prime is 16776211. The next prime is 16776217. The reversal of 16776216 is 61267761.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16776211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111 + ... + 5793.

Almost surely, 2^16776216 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 16776216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23275980).

16776216 is an abundant number, since it is smaller than the sum of its proper divisors (29775744).

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

16776216 is a wasteful number, since it uses less digits than its factorization.

16776216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5736 (or 5729 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 16776216 is about 4095.8779278685. The cubic root of 16776216 is about 255.9949136359.

The spelling of 16776216 in words is "sixteen million, seven hundred seventy-six thousand, two hundred sixteen".