28078283 has 2 divisors, whose sum is σ = 28078284. Its totient is φ = 28078282.

The previous prime is 28078273. The next prime is 28078307. The reversal of 28078283 is 38287082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28078283 - 2⁸ = 28078027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28078243) 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, 14039141 + 14039142.

It is an arithmetic number, because the mean of its divisors is an integer number (14039142).

Almost surely, 2^28078283 is an apocalyptic number.

28078283 is a deficient number, since it is larger than the sum of its proper divisors (1).

28078283 is an equidigital number, since it uses as much as digits as its factorization.

28078283 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 28078283 is about 5298.8945073477. The cubic root of 28078283 is about 303.9416258820.

The spelling of 28078283 in words is "twenty-eight million, seventy-eight thousand, two hundred eighty-three".