284878 has 16 divisors (see below), whose sum is σ = 487296. Its totient is φ = 123640.

The previous prime is 284857. The next prime is 284881. The reversal of 284878 is 878482.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225 + ... + 787.

It is an arithmetic number, because the mean of its divisors is an integer number (30456).

2²⁸⁴⁸⁷⁸ is an apocalyptic number.

284878 is a deficient number, since it is larger than the sum of its proper divisors (202418).

284878 is a wasteful number, since it uses less digits than its factorization.

284878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599.

The product of its digits is 28672, while the sum is 37.

The square root of 284878 is about 533.7396369017. The cubic root of 284878 is about 65.7990521015.

It can be divided in two parts, 2848 and 78, that added together give a triangular number (2926 = T₇₆).

The spelling of 284878 in words is "two hundred eighty-four thousand, eight hundred seventy-eight".