288920023 has 12 divisors (see below), whose sum is σ = 353780760. Its totient is φ = 234610992.

The previous prime is 288920017. The next prime is 288920033. The reversal of 288920023 is 320029882.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-288920023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288920033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154236 + ... + 156097.

It is an arithmetic number, because the mean of its divisors is an integer number (29481730).

Almost surely, 2^288920023 is an apocalyptic number.

288920023 is a deficient number, since it is larger than the sum of its proper divisors (64860737).

288920023 is a wasteful number, since it uses less digits than its factorization.

288920023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310366 (or 310359 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 288920023 is about 16997.6475725319. The cubic root of 288920023 is about 661.0879080925.

The spelling of 288920023 in words is "two hundred eighty-eight million, nine hundred twenty thousand, twenty-three".