28297963 has 2 divisors, whose sum is σ = 28297964. Its totient is φ = 28297962.

The previous prime is 28297957. The next prime is 28298021. The reversal of 28297963 is 36979282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28297963 - 2¹⁷ = 28166891 is a prime.

It is not a weakly prime, because it can be changed into another prime (28297903) 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, 14148981 + 14148982.

It is an arithmetic number, because the mean of its divisors is an integer number (14148982).

Almost surely, 2^28297963 is an apocalyptic number.

28297963 is a deficient number, since it is larger than the sum of its proper divisors (1).

28297963 is an equidigital number, since it uses as much as digits as its factorization.

28297963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 28297963 is about 5319.5829723767. The cubic root of 28297963 is about 304.7322311693.

The spelling of 28297963 in words is "twenty-eight million, two hundred ninety-seven thousand, nine hundred sixty-three".