102878 has 4 divisors (see below), whose sum is σ = 154320. Its totient is φ = 51438.

The previous prime is 102877. The next prime is 102881. The reversal of 102878 is 878201.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 102878.

It is not an unprimeable number, because it can be changed into a prime (102871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25718 + ... + 25721.

It is an arithmetic number, because the mean of its divisors is an integer number (38580).

2¹⁰²⁸⁷⁸ is an apocalyptic number.

102878 is a deficient number, since it is larger than the sum of its proper divisors (51442).

102878 is an equidigital number, since it uses as much as digits as its factorization.

102878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51441.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 102878 is about 320.7460054311. The cubic root of 102878 is about 46.8569666929.

The spelling of 102878 in words is "one hundred two thousand, eight hundred seventy-eight".