288238163 has 4 divisors (see below), whose sum is σ = 298177440. Its totient is φ = 278298888.

The previous prime is 288238157. The next prime is 288238193. The reversal of 288238163 is 361832882.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 288238163 - 2⁴ = 288238147 is a prime.

It is a super-2 number, since 2×288238163² = 166162477219229138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 288238163.

It is not an unprimeable number, because it can be changed into a prime (288238123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4969595 + ... + 4969652.

It is an arithmetic number, because the mean of its divisors is an integer number (74544360).

Almost surely, 2^288238163 is an apocalyptic number.

288238163 is a deficient number, since it is larger than the sum of its proper divisors (9939277).

288238163 is an equidigital number, since it uses as much as digits as its factorization.

288238163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9939276.

The product of its digits is 110592, while the sum is 41.

The square root of 288238163 is about 16977.5782430828. The cubic root of 288238163 is about 660.5674359427.

The spelling of 288238163 in words is "two hundred eighty-eight million, two hundred thirty-eight thousand, one hundred sixty-three".