28355863 has 2 divisors, whose sum is σ = 28355864. Its totient is φ = 28355862.

The previous prime is 28355857. The next prime is 28355869. The reversal of 28355863 is 36855382.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (28355857) and next prime (28355869).

It is a cyclic number.

It is not a de Polignac number, because 28355863 - 2⁹ = 28355351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28355869) 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, 14177931 + 14177932.

It is an arithmetic number, because the mean of its divisors is an integer number (14177932).

Almost surely, 2^28355863 is an apocalyptic number.

28355863 is a deficient number, since it is larger than the sum of its proper divisors (1).

28355863 is an equidigital number, since it uses as much as digits as its factorization.

28355863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 40.

The square root of 28355863 is about 5325.0223473709. The cubic root of 28355863 is about 304.9399254610.

The spelling of 28355863 in words is "twenty-eight million, three hundred fifty-five thousand, eight hundred sixty-three".