288923 has 6 divisors (see below), whose sum is σ = 297444. Its totient is φ = 280604.

The previous prime is 288913. The next prime is 288929. The reversal of 288923 is 329882.

It is a happy number.

It is not a de Polignac number, because 288923 - 2⁴ = 288907 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 288923.

It is not an unprimeable number, because it can be changed into a prime (288929) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3440 + ... + 3522.

It is an arithmetic number, because the mean of its divisors is an integer number (49574).

2²⁸⁸⁹²³ is an apocalyptic number.

288923 is a deficient number, since it is larger than the sum of its proper divisors (8521).

288923 is an frugal number, since it uses more digits than its factorization.

288923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 142 counting only the distinct ones).

The product of its digits is 6912, while the sum is 32.

The square root of 288923 is about 537.5155811695. The cubic root of 288923 is about 66.1090178677.

The spelling of 288923 in words is "two hundred eighty-eight thousand, nine hundred twenty-three".