278841 has 8 divisors (see below), whose sum is σ = 381024. Its totient is φ = 181280.

The previous prime is 278827. The next prime is 278843. The reversal of 278841 is 148872.

278841 = T₃₈ + T₃₉ + ... + T₁₁₉.

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 278841 - 2⁵ = 278809 is a prime.

278841 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 278799 and 278808.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 278841.

It is not an unprimeable number, because it can be changed into a prime (278843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011 + ... + 1256.

It is an arithmetic number, because the mean of its divisors is an integer number (47628).

2²⁷⁸⁸⁴¹ is an apocalyptic number.

It is an amenable number.

278841 is a deficient number, since it is larger than the sum of its proper divisors (102183).

278841 is a wasteful number, since it uses less digits than its factorization.

278841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2311.

The product of its digits is 3584, while the sum is 30.

The square root of 278841 is about 528.0539745140. The cubic root of 278841 is about 65.3309355175.

The spelling of 278841 in words is "two hundred seventy-eight thousand, eight hundred forty-one".