203878 has 4 divisors (see below), whose sum is σ = 305820. Its totient is φ = 101938.

The previous prime is 203873. The next prime is 203897. The reversal of 203878 is 878302.

It is a happy number.

203878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50968 + ... + 50971.

It is an arithmetic number, because the mean of its divisors is an integer number (76455).

2²⁰³⁸⁷⁸ is an apocalyptic number.

203878 is a deficient number, since it is larger than the sum of its proper divisors (101942).

203878 is a wasteful number, since it uses less digits than its factorization.

203878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101941.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 203878 is about 451.5285151571. The cubic root of 203878 is about 58.8559157737.

It can be divided in two parts, 2038 and 78, that added together give a square (2116 = 46²).

The spelling of 203878 in words is "two hundred three thousand, eight hundred seventy-eight".