16816320 has 84 divisors (see below), whose sum is σ = 57851040. Its totient is φ = 4483584.

The previous prime is 16816313. The next prime is 16816343. The reversal of 16816320 is 2361861.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40 + ... + 5799.

Almost surely, 2^16816320 is an apocalyptic number.

16816320 is a gapful number since it is divisible by the number (10) 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 16816320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28925520).

16816320 is an abundant number, since it is smaller than the sum of its proper divisors (41034720).

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

16816320 is a wasteful number, since it uses less digits than its factorization.

16816320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5862 (or 5849 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 16816320 is about 4100.7706592786. The cubic root of 16816320 is about 256.1987389035.

It can be divided in two parts, 1681 and 6320, that added together give a triangular number (8001 = T₁₂₆).

The spelling of 16816320 in words is "sixteen million, eight hundred sixteen thousand, three hundred twenty".