28308083 has 2 divisors, whose sum is σ = 28308084. Its totient is φ = 28308082.

The previous prime is 28308079. The next prime is 28308109. The reversal of 28308083 is 38080382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28308083 - 2² = 28308079 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28301083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14154041 + 14154042.

It is an arithmetic number, because the mean of its divisors is an integer number (14154042).

Almost surely, 2^28308083 is an apocalyptic number.

28308083 is a deficient number, since it is larger than the sum of its proper divisors (1).

28308083 is an equidigital number, since it uses as much as digits as its factorization.

28308083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 28308083 is about 5320.5340897320. The cubic root of 28308083 is about 304.7685532493.

The spelling of 28308083 in words is "twenty-eight million, three hundred eight thousand, eighty-three".