28917299 has 2 divisors, whose sum is σ = 28917300. Its totient is φ = 28917298.

The previous prime is 28917293. The next prime is 28917307. The reversal of 28917299 is 99271982.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28917299 - 2⁸ = 28917043 is a prime.

It is not a weakly prime, because it can be changed into another prime (28917293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14458649 + 14458650.

It is an arithmetic number, because the mean of its divisors is an integer number (14458650).

Almost surely, 2^28917299 is an apocalyptic number.

28917299 is a deficient number, since it is larger than the sum of its proper divisors (1).

28917299 is an equidigital number, since it uses as much as digits as its factorization.

28917299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 47.

The square root of 28917299 is about 5377.4807298585. The cubic root of 28917299 is about 306.9393543092.

The spelling of 28917299 in words is "twenty-eight million, nine hundred seventeen thousand, two hundred ninety-nine".