16678844 has 24 divisors (see below), whose sum is σ = 35924448. Its totient is φ = 6598080.

The previous prime is 16678817. The next prime is 16678861. The reversal of 16678844 is 44887661.

It is a junction number, because it is equal to n+sod(n) for n = 16678795 and 16678804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22547 + ... + 23274.

It is an arithmetic number, because the mean of its divisors is an integer number (1496852).

Almost surely, 2^16678844 is an apocalyptic number.

16678844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

16678844 is an abundant number, since it is smaller than the sum of its proper divisors (19245604).

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

16678844 is a wasteful number, since it uses less digits than its factorization.

16678844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45845 (or 45843 counting only the distinct ones).

The product of its digits is 258048, while the sum is 44.

The square root of 16678844 is about 4083.9740449714. The cubic root of 16678844 is about 255.4986730221.

The spelling of 16678844 in words is "sixteen million, six hundred seventy-eight thousand, eight hundred forty-four".