28442299 has 2 divisors, whose sum is σ = 28442300. Its totient is φ = 28442298.

The previous prime is 28442279. The next prime is 28442311. The reversal of 28442299 is 99224482.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28442299 is a prime.

It is not a weakly prime, because it can be changed into another prime (28442279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14221149 + 14221150.

It is an arithmetic number, because the mean of its divisors is an integer number (14221150).

Almost surely, 2^28442299 is an apocalyptic number.

28442299 is a deficient number, since it is larger than the sum of its proper divisors (1).

28442299 is an equidigital number, since it uses as much as digits as its factorization.

28442299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 28442299 is about 5333.1321941238. The cubic root of 28442299 is about 305.2494564021.

It can be divided in two parts, 2844 and 2299, that multiplied together give a palindrome (6538356).

The spelling of 28442299 in words is "twenty-eight million, four hundred forty-two thousand, two hundred ninety-nine".