278898 has 32 divisors (see below), whose sum is σ = 608256. Its totient is φ = 85008.

The previous prime is 278891. The next prime is 278903. The reversal of 278898 is 898872.

It is a happy number.

It is a nialpdrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278891) 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 15 ways as a sum of consecutive naturals, for example, 5911 + ... + 5957.

It is an arithmetic number, because the mean of its divisors is an integer number (19008).

2²⁷⁸⁸⁹⁸ is an apocalyptic number.

278898 is an abundant number, since it is smaller than the sum of its proper divisors (329358).

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

278898 is a wasteful number, since it uses less digits than its factorization.

278898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118.

The product of its digits is 64512, while the sum is 42.

The square root of 278898 is about 528.1079435116. The cubic root of 278898 is about 65.3353868113.

It can be divided in two parts, 278 and 898, that added together give a triangular number (1176 = T₄₈).

The spelling of 278898 in words is "two hundred seventy-eight thousand, eight hundred ninety-eight".