28897283 has 2 divisors, whose sum is σ = 28897284. Its totient is φ = 28897282.

The previous prime is 28897249. The next prime is 28897289. The reversal of 28897283 is 38279882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28897283 - 2⁸ = 28897027 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28897289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14448641 + 14448642.

It is an arithmetic number, because the mean of its divisors is an integer number (14448642).

Almost surely, 2^28897283 is an apocalyptic number.

28897283 is a deficient number, since it is larger than the sum of its proper divisors (1).

28897283 is an equidigital number, since it uses as much as digits as its factorization.

28897283 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 47.

The square root of 28897283 is about 5375.6193131583. The cubic root of 28897283 is about 306.8685187841.

The spelling of 28897283 in words is "twenty-eight million, eight hundred ninety-seven thousand, two hundred eighty-three".