28518799 has 2 divisors, whose sum is σ = 28518800. Its totient is φ = 28518798.

The previous prime is 28518797. The next prime is 28518811. The reversal of 28518799 is 99781582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28518799 - 2¹ = 28518797 is a prime.

Together with 28518797, 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 (28518793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14259399 + 14259400.

It is an arithmetic number, because the mean of its divisors is an integer number (14259400).

Almost surely, 2^28518799 is an apocalyptic number.

28518799 is a deficient number, since it is larger than the sum of its proper divisors (1).

28518799 is an equidigital number, since it uses as much as digits as its factorization.

28518799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 49.

The square root of 28518799 is about 5340.2995234350. The cubic root of 28518799 is about 305.5228834169.

The spelling of 28518799 in words is "twenty-eight million, five hundred eighteen thousand, seven hundred ninety-nine".