288660427 has 8 divisors (see below), whose sum is σ = 317846592. Its totient is φ = 259965000.

The previous prime is 288660397. The next prime is 288660431. The reversal of 288660427 is 724066882.

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 288660427 - 2¹¹ = 288658379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288660497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121449 + ... + 123802.

It is an arithmetic number, because the mean of its divisors is an integer number (39730824).

Almost surely, 2^288660427 is an apocalyptic number.

288660427 is a deficient number, since it is larger than the sum of its proper divisors (29186165).

288660427 is a wasteful number, since it uses less digits than its factorization.

288660427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245369.

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 288660427 is about 16990.0096233051. The cubic root of 288660427 is about 660.8898518972.

The spelling of 288660427 in words is "two hundred eighty-eight million, six hundred sixty thousand, four hundred twenty-seven".