288888923 has 4 divisors (see below), whose sum is σ = 298850640. Its totient is φ = 278927208.

The previous prime is 288888893. The next prime is 288888961. The reversal of 288888923 is 329888882.

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 288888923 - 2¹⁰ = 288887899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288888023) 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, 4980815 + ... + 4980872.

It is an arithmetic number, because the mean of its divisors is an integer number (74712660).

Almost surely, 2^288888923 is an apocalyptic number.

288888923 is a deficient number, since it is larger than the sum of its proper divisors (9961717).

288888923 is an equidigital number, since it uses as much as digits as its factorization.

288888923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9961716.

The product of its digits is 3538944, while the sum is 56.

The square root of 288888923 is about 16996.7327154368. The cubic root of 288888923 is about 661.0641869124.

The spelling of 288888923 in words is "two hundred eighty-eight million, eight hundred eighty-eight thousand, nine hundred twenty-three".