278411 has 8 divisors (see below), whose sum is σ = 328704. Its totient is φ = 230760.

The previous prime is 278393. The next prime is 278413. The reversal of 278411 is 114872.

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 278411 - 2⁶ = 278347 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 278411.

It is not an unprimeable number, because it can be changed into a prime (278413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425 + ... + 858.

It is an arithmetic number, because the mean of its divisors is an integer number (41088).

2²⁷⁸⁴¹¹ is an apocalyptic number.

278411 is a deficient number, since it is larger than the sum of its proper divisors (50293).

278411 is a wasteful number, since it uses less digits than its factorization.

278411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321.

The product of its digits is 448, while the sum is 23.

The square root of 278411 is about 527.6466620761. The cubic root of 278411 is about 65.2973360170.

The spelling of 278411 in words is "two hundred seventy-eight thousand, four hundred eleven".