28864499 has 2 divisors, whose sum is σ = 28864500. Its totient is φ = 28864498.

The previous prime is 28864421. The next prime is 28864519. The reversal of 28864499 is 99446882.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28864499 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (28866499) 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, 14432249 + 14432250.

It is an arithmetic number, because the mean of its divisors is an integer number (14432250).

Almost surely, 2^28864499 is an apocalyptic number.

28864499 is a deficient number, since it is larger than the sum of its proper divisors (1).

28864499 is an equidigital number, since it uses as much as digits as its factorization.

28864499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 50.

The square root of 28864499 is about 5372.5691247298. The cubic root of 28864499 is about 306.7524273114.

The spelling of 28864499 in words is "twenty-eight million, eight hundred sixty-four thousand, four hundred ninety-nine".