28518863 has 2 divisors, whose sum is σ = 28518864. Its totient is φ = 28518862.

The previous prime is 28518859. The next prime is 28518881. The reversal of 28518863 is 36881582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28518863 - 2² = 28518859 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28518863.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28518463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14259431 + 14259432.

It is an arithmetic number, because the mean of its divisors is an integer number (14259432).

Almost surely, 2^28518863 is an apocalyptic number.

28518863 is a deficient number, since it is larger than the sum of its proper divisors (1).

28518863 is an equidigital number, since it uses as much as digits as its factorization.

28518863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 41.

The square root of 28518863 is about 5340.3055156049. The cubic root of 28518863 is about 305.5231119615.

The spelling of 28518863 in words is "twenty-eight million, five hundred eighteen thousand, eight hundred sixty-three".