28318783 has 2 divisors, whose sum is σ = 28318784. Its totient is φ = 28318782.

The previous prime is 28318781. The next prime is 28318789. The reversal of 28318783 is 38781382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28318783 - 2¹ = 28318781 is a prime.

Together with 28318781, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28318781) 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, 14159391 + 14159392.

It is an arithmetic number, because the mean of its divisors is an integer number (14159392).

Almost surely, 2^28318783 is an apocalyptic number.

28318783 is a deficient number, since it is larger than the sum of its proper divisors (1).

28318783 is an equidigital number, since it uses as much as digits as its factorization.

28318783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 28318783 is about 5321.5395328796. The cubic root of 28318783 is about 304.8069476157.

The spelling of 28318783 in words is "twenty-eight million, three hundred eighteen thousand, seven hundred eighty-three".