28122863 has 2 divisors, whose sum is σ = 28122864. Its totient is φ = 28122862.

The previous prime is 28122847. The next prime is 28122877. The reversal of 28122863 is 36822182.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28122863 - 2⁴ = 28122847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28122833) 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, 14061431 + 14061432.

It is an arithmetic number, because the mean of its divisors is an integer number (14061432).

Almost surely, 2^28122863 is an apocalyptic number.

28122863 is a deficient number, since it is larger than the sum of its proper divisors (1).

28122863 is an equidigital number, since it uses as much as digits as its factorization.

28122863 is an odious number, because the sum of its binary digits is odd.

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

The square root of 28122863 is about 5303.0993767796. The cubic root of 28122863 is about 304.1023972632.

The spelling of 28122863 in words is "twenty-eight million, one hundred twenty-two thousand, eight hundred sixty-three".