28265983 has 2 divisors, whose sum is σ = 28265984. Its totient is φ = 28265982.

The previous prime is 28265971. The next prime is 28266059. The reversal of 28265983 is 38956282.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28265983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28265903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14132991 + 14132992.

It is an arithmetic number, because the mean of its divisors is an integer number (14132992).

Almost surely, 2^28265983 is an apocalyptic number.

28265983 is a deficient number, since it is larger than the sum of its proper divisors (1).

28265983 is an equidigital number, since it uses as much as digits as its factorization.

28265983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 28265983 is about 5316.5762479250. The cubic root of 28265983 is about 304.6173935726.

The spelling of 28265983 in words is "twenty-eight million, two hundred sixty-five thousand, nine hundred eighty-three".