278971 has 8 divisors (see below), whose sum is σ = 347904. Its totient is φ = 217320.

The previous prime is 278947. The next prime is 278981. The reversal of 278971 is 179872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 278971 - 2⁷ = 278843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (278911) 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, 1735 + ... + 1888.

It is an arithmetic number, because the mean of its divisors is an integer number (43488).

2²⁷⁸⁹⁷¹ is an apocalyptic number.

278971 is a deficient number, since it is larger than the sum of its proper divisors (68933).

278971 is a wasteful number, since it uses less digits than its factorization.

278971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3641.

The product of its digits is 7056, while the sum is 34.

The square root of 278971 is about 528.1770536477. The cubic root of 278971 is about 65.3410867054.

Subtracting from 278971 its reverse (179872), we obtain a palindrome (99099).

It can be divided in two parts, 27 and 8971, that added together give a palindrome (8998).

The spelling of 278971 in words is "two hundred seventy-eight thousand, nine hundred seventy-one".