288328081 has 2 divisors, whose sum is σ = 288328082. Its totient is φ = 288328080.

The previous prime is 288328057. The next prime is 288328111. The reversal of 288328081 is 180823882.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201185856 + 87142225 = 14184^2 + 9335^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-288328081 is a prime.

It is a super-2 number, since 2×288328081² = 166266164586285122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (288328681) 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 as a sum of consecutive naturals, namely, 144164040 + 144164041.

It is an arithmetic number, because the mean of its divisors is an integer number (144164041).

Almost surely, 2^288328081 is an apocalyptic number.

It is an amenable number.

288328081 is a deficient number, since it is larger than the sum of its proper divisors (1).

288328081 is an equidigital number, since it uses as much as digits as its factorization.

288328081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 288328081 is about 16980.2261763499. The cubic root of 288328081 is about 660.6361184131.

The spelling of 288328081 in words is "two hundred eighty-eight million, three hundred twenty-eight thousand, eighty-one".