288642117 has 8 divisors (see below), whose sum is σ = 385166880. Its totient is φ = 192272720.

The previous prime is 288642113. The next prime is 288642119. The reversal of 288642117 is 711246882.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 288642117 - 2² = 288642113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288642113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34434 + ... + 41987.

It is an arithmetic number, because the mean of its divisors is an integer number (48145860).

Almost surely, 2^288642117 is an apocalyptic number.

It is an amenable number.

288642117 is a deficient number, since it is larger than the sum of its proper divisors (96524763).

288642117 is a wasteful number, since it uses less digits than its factorization.

288642117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77683.

The product of its digits is 43008, while the sum is 39.

The square root of 288642117 is about 16989.4707686849. The cubic root of 288642117 is about 660.8758779820.

Adding to 288642117 its reverse (711246882), we get a palindrome (999888999).

The spelling of 288642117 in words is "two hundred eighty-eight million, six hundred forty-two thousand, one hundred seventeen".