28238767 has 2 divisors, whose sum is σ = 28238768. Its totient is φ = 28238766.

The previous prime is 28238741. The next prime is 28238773. The reversal of 28238767 is 76783282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28238767 - 2¹⁵ = 28205999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28238797) 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, 14119383 + 14119384.

It is an arithmetic number, because the mean of its divisors is an integer number (14119384).

Almost surely, 2^28238767 is an apocalyptic number.

28238767 is a deficient number, since it is larger than the sum of its proper divisors (1).

28238767 is an equidigital number, since it uses as much as digits as its factorization.

28238767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 28238767 is about 5314.0160895504. The cubic root of 28238767 is about 304.5195948718.

The spelling of 28238767 in words is "twenty-eight million, two hundred thirty-eight thousand, seven hundred sixty-seven".