28866599 has 2 divisors, whose sum is σ = 28866600. Its totient is φ = 28866598.

The previous prime is 28866589. The next prime is 28866637. The reversal of 28866599 is 99566882.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28866599 - 2¹⁶ = 28801063 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28866599.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28866589) 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, 14433299 + 14433300.

It is an arithmetic number, because the mean of its divisors is an integer number (14433300).

Almost surely, 2^28866599 is an apocalyptic number.

28866599 is a deficient number, since it is larger than the sum of its proper divisors (1).

28866599 is an equidigital number, since it uses as much as digits as its factorization.

28866599 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 53.

The square root of 28866599 is about 5372.7645584001. The cubic root of 28866599 is about 306.7598662589.

The spelling of 28866599 in words is "twenty-eight million, eight hundred sixty-six thousand, five hundred ninety-nine".