28016999 has 2 divisors, whose sum is σ = 28017000. Its totient is φ = 28016998.

The previous prime is 28016983. The next prime is 28017007. The reversal of 28016999 is 99961082.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28016999 - 2⁴ = 28016983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28016959) 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, 14008499 + 14008500.

It is an arithmetic number, because the mean of its divisors is an integer number (14008500).

Almost surely, 2^28016999 is an apocalyptic number.

28016999 is a deficient number, since it is larger than the sum of its proper divisors (1).

28016999 is an equidigital number, since it uses as much as digits as its factorization.

28016999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 28016999 is about 5293.1086329302. The cubic root of 28016999 is about 303.7203359178.

The spelling of 28016999 in words is "twenty-eight million, sixteen thousand, nine hundred ninety-nine".