278795 has 16 divisors (see below), whose sum is σ = 377568. Its totient is φ = 195840.

The previous prime is 278767. The next prime is 278801. The reversal of 278795 is 597872.

It is not a de Polignac number, because 278795 - 2¹⁴ = 262411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1967 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (23598).

2²⁷⁸⁷⁹⁵ is an apocalyptic number.

278795 is a deficient number, since it is larger than the sum of its proper divisors (98773).

278795 is a wasteful number, since it uses less digits than its factorization.

278795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190.

The product of its digits is 35280, while the sum is 38.

The square root of 278795 is about 528.0104165639. The cubic root of 278795 is about 65.3273428030.

It can be divided in two parts, 2787 and 95, that added together give a palindrome (2882).

The spelling of 278795 in words is "two hundred seventy-eight thousand, seven hundred ninety-five".