204878 has 8 divisors (see below), whose sum is σ = 311040. Its totient is φ = 101200.

The previous prime is 204871. The next prime is 204887. The reversal of 204878 is 878402.

It is a sphenic number, since it is the product of 3 distinct primes.

204878 is a modest number, since divided by 4878 gives 2 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 204878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204871) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 398 + ... + 753.

It is an arithmetic number, because the mean of its divisors is an integer number (38880).

2²⁰⁴⁸⁷⁸ is an apocalyptic number.

204878 is a deficient number, since it is larger than the sum of its proper divisors (106162).

204878 is a wasteful number, since it uses less digits than its factorization.

204878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1242.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 204878 is about 452.6345103944. The cubic root of 204878 is about 58.9519862174.

The spelling of 204878 in words is "two hundred four thousand, eight hundred seventy-eight".