16810816 has 28 divisors (see below), whose sum is σ = 36393120. Its totient is φ = 7640960.

The previous prime is 16810813. The next prime is 16810847. The reversal of 16810816 is 61801861.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16810813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11236 + ... + 12643.

Almost surely, 2^16810816 is an apocalyptic number.

16810816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16810816 is an abundant number, since it is smaller than the sum of its proper divisors (19582304).

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

16810816 is a wasteful number, since it uses less digits than its factorization.

16810816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23902 (or 23892 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 16810816 is about 4100.0995109875. The cubic root of 16810816 is about 256.1707844773.

The spelling of 16810816 in words is "sixteen million, eight hundred ten thousand, eight hundred sixteen".