288520923 has 32 divisors (see below), whose sum is σ = 418084416. Its totient is φ = 176304128.

The previous prime is 288520919. The next prime is 288520933. The reversal of 288520923 is 329025882.

It is a cyclic number.

It is not a de Polignac number, because 288520923 - 2² = 288520919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (288520933) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 467311 + ... + 467927.

It is an arithmetic number, because the mean of its divisors is an integer number (13065138).

Almost surely, 2^288520923 is an apocalyptic number.

288520923 is a deficient number, since it is larger than the sum of its proper divisors (129563493).

288520923 is a wasteful number, since it uses less digits than its factorization.

288520923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 288520923 is about 16985.9036556787. The cubic root of 288520923 is about 660.7833696485.

The spelling of 288520923 in words is "two hundred eighty-eight million, five hundred twenty thousand, nine hundred twenty-three".