16878 has 16 divisors (see below), whose sum is σ = 35280. Its totient is φ = 5376.

The previous prime is 16871. The next prime is 16879. The reversal of 16878 is 87861.

16878 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16871) by changing a digit.

16878 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126 + ... + 222.

It is an arithmetic number, because the mean of its divisors is an integer number (2205).

2¹⁶⁸⁷⁸ is an apocalyptic number.

16878 is an abundant number, since it is smaller than the sum of its proper divisors (18402).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17640).

16878 is a wasteful number, since it uses less digits than its factorization.

16878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131.

The product of its digits is 2688, while the sum is 30.

The square root of 16878 is about 129.9153570599. The cubic root of 16878 is about 25.6511590887.

The spelling of 16878 in words is "sixteen thousand, eight hundred seventy-eight".