288117887 has 8 divisors (see below), whose sum is σ = 305227296. Its totient is φ = 271026432.

The previous prime is 288117859. The next prime is 288117899. The reversal of 288117887 is 788711882.

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 288117887 - 2¹⁶ = 288052351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288117857) 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, 42998 + ... + 49244.

It is an arithmetic number, because the mean of its divisors is an integer number (38153412).

Almost surely, 2^288117887 is an apocalyptic number.

288117887 is a deficient number, since it is larger than the sum of its proper divisors (17109409).

288117887 is a wasteful number, since it uses less digits than its factorization.

288117887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8977.

The product of its digits is 401408, while the sum is 50.

The square root of 288117887 is about 16974.0356721671. The cubic root of 288117887 is about 660.4755426490.

The spelling of 288117887 in words is "two hundred eighty-eight million, one hundred seventeen thousand, eight hundred eighty-seven".