278894 has 16 divisors (see below), whose sum is σ = 521856. Its totient is φ = 108600.

The previous prime is 278891. The next prime is 278903. The reversal of 278894 is 498872.

It is a Curzon number.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752 + ... + 1059.

It is an arithmetic number, because the mean of its divisors is an integer number (32616).

2²⁷⁸⁸⁹⁴ is an apocalyptic number.

278894 is a deficient number, since it is larger than the sum of its proper divisors (242962).

278894 is a wasteful number, since it uses less digits than its factorization.

278894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831.

The product of its digits is 32256, while the sum is 38.

The square root of 278894 is about 528.1041563934. The cubic root of 278894 is about 65.3350744596.

It can be divided in two parts, 27889 and 4, that multiplied together give a square (111556 = 334²).

The spelling of 278894 in words is "two hundred seventy-eight thousand, eight hundred ninety-four".