278872 has 16 divisors (see below), whose sum is σ = 570600. Its totient is φ = 126720.

The previous prime is 278867. The next prime is 278879.

278872 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278879) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1497 + ... + 1672.

2²⁷⁸⁸⁷² is an apocalyptic number.

278872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

278872 is an abundant number, since it is smaller than the sum of its proper divisors (291728).

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

278872 is a wasteful number, since it uses less digits than its factorization.

278872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186 (or 3182 counting only the distinct ones).

The product of its digits is 12544, while the sum is 34.

The square root of 278872 is about 528.0833267582. The cubic root of 278872 is about 65.3333564718. Note that the first 4 decimals are identical.

It can be divided in two parts, 27887 and 2, that added together give a square (27889 = 167²).

The spelling of 278872 in words is "two hundred seventy-eight thousand, eight hundred seventy-two".