278982 has 24 divisors (see below), whose sum is σ = 659880. Its totient is φ = 84480.

The previous prime is 278981. The next prime is 279001. The reversal of 278982 is 289872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278981) 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 11 ways as a sum of consecutive naturals, for example, 507 + ... + 902.

It is an arithmetic number, because the mean of its divisors is an integer number (27495).

2²⁷⁸⁹⁸² is an apocalyptic number.

278982 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

278982 is an abundant number, since it is smaller than the sum of its proper divisors (380898).

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

278982 is a wasteful number, since it uses less digits than its factorization.

278982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428 (or 1425 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 278982 is about 528.1874667199. The cubic root of 278982 is about 65.3419455073.

It can be divided in two parts, 27 and 8982, that added together give a palindrome (9009).

The spelling of 278982 in words is "two hundred seventy-eight thousand, nine hundred eighty-two".