278967 has 16 divisors (see below), whose sum is σ = 419328. Its totient is φ = 163680.

The previous prime is 278947. The next prime is 278981. The reversal of 278967 is 769872.

It is not a de Polignac number, because 278967 - 2⁶ = 278903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an alternating number because its digits alternate between even and odd.

It is a plaindrome in base 15.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (278917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 742 + ... + 1052.

It is an arithmetic number, because the mean of its divisors is an integer number (26208).

2²⁷⁸⁹⁶⁷ is an apocalyptic number.

278967 is a deficient number, since it is larger than the sum of its proper divisors (140361).

278967 is a wasteful number, since it uses less digits than its factorization.

278967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350.

The product of its digits is 42336, while the sum is 39.

The square root of 278967 is about 528.1732670251. The cubic root of 278967 is about 65.3407744082.

The spelling of 278967 in words is "two hundred seventy-eight thousand, nine hundred sixty-seven".