28968019 has 2 divisors, whose sum is σ = 28968020. Its totient is φ = 28968018.

The previous prime is 28968001. The next prime is 28968041. The reversal of 28968019 is 91086982.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28968019 - 2⁷ = 28967891 is a prime.

It is a super-2 number, since 2×28968019² = 1678292249568722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28968059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14484009 + 14484010.

It is an arithmetic number, because the mean of its divisors is an integer number (14484010).

Almost surely, 2^28968019 is an apocalyptic number.

28968019 is a deficient number, since it is larger than the sum of its proper divisors (1).

28968019 is an equidigital number, since it uses as much as digits as its factorization.

28968019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 28968019 is about 5382.1946267299. The cubic root of 28968019 is about 307.1187033673.

The spelling of 28968019 in words is "twenty-eight million, nine hundred sixty-eight thousand, nineteen".