278244 has 36 divisors (see below), whose sum is σ = 720720. Its totient is φ = 90480.

The previous prime is 278237. The next prime is 278261. The reversal of 278244 is 442872.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nialpdrome in base 6 and base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 278244.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2059 + ... + 2189.

It is an arithmetic number, because the mean of its divisors is an integer number (20020).

2²⁷⁸²⁴⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 278244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (360360).

278244 is an abundant number, since it is smaller than the sum of its proper divisors (442476).

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

278244 is a wasteful number, since it uses less digits than its factorization.

278244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 195 counting only the distinct ones).

The product of its digits is 3584, while the sum is 27.

The square root of 278244 is about 527.4883884978. The cubic root of 278244 is about 65.2842775816.

The spelling of 278244 in words is "two hundred seventy-eight thousand, two hundred forty-four".