108978 has 16 divisors (see below), whose sum is σ = 223776. Its totient is φ = 35360.

The previous prime is 108971. The next prime is 108991. The reversal of 108978 is 879801.

It is not an unprimeable number, because it can be changed into a prime (108971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25 + ... + 467.

It is an arithmetic number, because the mean of its divisors is an integer number (13986).

2¹⁰⁸⁹⁷⁸ is an apocalyptic number.

108978 is an abundant number, since it is smaller than the sum of its proper divisors (114798).

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

108978 is a wasteful number, since it uses less digits than its factorization.

108978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 108978 is about 330.1181606637. The cubic root of 108978 is about 47.7653478071.

The spelling of 108978 in words is "one hundred eight thousand, nine hundred seventy-eight".