16863680 has 56 divisors (see below), whose sum is σ = 40538400. Its totient is φ = 6681600.

The previous prime is 16863673. The next prime is 16863701. The reversal of 16863680 is 8636861.

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 7 ways as a sum of consecutive naturals, for example, 48146 + ... + 48494.

It is an arithmetic number, because the mean of its divisors is an integer number (723900).

Almost surely, 2^16863680 is an apocalyptic number.

16863680 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 16863680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20269200).

16863680 is an abundant number, since it is smaller than the sum of its proper divisors (23674720).

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

16863680 is a wasteful number, since it uses less digits than its factorization.

16863680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 507 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 16863680 is about 4106.5411236222. The cubic root of 16863680 is about 256.4390253122.

The spelling of 16863680 in words is "sixteen million, eight hundred sixty-three thousand, six hundred eighty".