278283 has 4 divisors (see below), whose sum is σ = 371048. Its totient is φ = 185520.

The previous prime is 278279. The next prime is 278321. The reversal of 278283 is 382872.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 278283 - 2² = 278279 is a prime.

It is a D-number.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 278283.

It is not an unprimeable number, because it can be changed into a prime (278233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46378 + ... + 46383.

It is an arithmetic number, because the mean of its divisors is an integer number (92762).

2²⁷⁸²⁸³ is an apocalyptic number.

278283 is a deficient number, since it is larger than the sum of its proper divisors (92765).

278283 is an equidigital number, since it uses as much as digits as its factorization.

278283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92764.

The product of its digits is 5376, while the sum is 30.

The square root of 278283 is about 527.5253548409. The cubic root of 278283 is about 65.2873276238.

It can be divided in two parts, 278 and 283, that added together give a triangular number (561 = T₃₃).

The spelling of 278283 in words is "two hundred seventy-eight thousand, two hundred eighty-three".