28230647 has 2 divisors, whose sum is σ = 28230648. Its totient is φ = 28230646.

The previous prime is 28230623. The next prime is 28230701. The reversal of 28230647 is 74603282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28230647 - 2¹² = 28226551 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28230607) 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, 14115323 + 14115324.

It is an arithmetic number, because the mean of its divisors is an integer number (14115324).

Almost surely, 2^28230647 is an apocalyptic number.

28230647 is a deficient number, since it is larger than the sum of its proper divisors (1).

28230647 is an equidigital number, since it uses as much as digits as its factorization.

28230647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 28230647 is about 5313.2520173619. The cubic root of 28230647 is about 304.4904040771.

The spelling of 28230647 in words is "twenty-eight million, two hundred thirty thousand, six hundred forty-seven".