288278 has 4 divisors (see below), whose sum is σ = 432420. Its totient is φ = 144138.

The previous prime is 288257. The next prime is 288283. The reversal of 288278 is 872882.

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 288278.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72068 + ... + 72071.

It is an arithmetic number, because the mean of its divisors is an integer number (108105).

2²⁸⁸²⁷⁸ is an apocalyptic number.

288278 is a deficient number, since it is larger than the sum of its proper divisors (144142).

288278 is a wasteful number, since it uses less digits than its factorization.

288278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144141.

The product of its digits is 14336, while the sum is 35.

The square root of 288278 is about 536.9152633331. The cubic root of 288278 is about 66.0597866580.

The spelling of 288278 in words is "two hundred eighty-eight thousand, two hundred seventy-eight".