288223 has 4 divisors (see below), whose sum is σ = 310408. Its totient is φ = 266040.

The previous prime is 288209. The next prime is 288227. The reversal of 288223 is 322882.

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

It is a cyclic number.

It is not a de Polignac number, because 288223 - 2⁵ = 288191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288227) 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, 11073 + ... + 11098.

It is an arithmetic number, because the mean of its divisors is an integer number (77602).

2²⁸⁸²²³ is an apocalyptic number.

288223 is a deficient number, since it is larger than the sum of its proper divisors (22185).

288223 is a wasteful number, since it uses less digits than its factorization.

288223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22184.

The product of its digits is 1536, while the sum is 25.

The square root of 288223 is about 536.8640423794. The cubic root of 288223 is about 66.0555852513.

The spelling of 288223 in words is "two hundred eighty-eight thousand, two hundred twenty-three".