28998017 has 2 divisors, whose sum is σ = 28998018. Its totient is φ = 28998016.

The previous prime is 28998001. The next prime is 28998019. The reversal of 28998017 is 71089982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28633201 + 364816 = 5351^2 + 604^2 .

It is a cyclic number.

It is not a de Polignac number, because 28998017 - 2⁴ = 28998001 is a prime.

Together with 28998019, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28998019) 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, 14499008 + 14499009.

It is an arithmetic number, because the mean of its divisors is an integer number (14499009).

Almost surely, 2^28998017 is an apocalyptic number.

It is an amenable number.

28998017 is a deficient number, since it is larger than the sum of its proper divisors (1).

28998017 is an equidigital number, since it uses as much as digits as its factorization.

28998017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 28998017 is about 5384.9806870591. The cubic root of 28998017 is about 307.2246796454.

The spelling of 28998017 in words is "twenty-eight million, nine hundred ninety-eight thousand, seventeen".