28324847 has 2 divisors, whose sum is σ = 28324848. Its totient is φ = 28324846.

The previous prime is 28324789. The next prime is 28324859. The reversal of 28324847 is 74842382.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28324847 - 2⁶ = 28324783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28324847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28324867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14162423 + 14162424.

It is an arithmetic number, because the mean of its divisors is an integer number (14162424).

Almost surely, 2^28324847 is an apocalyptic number.

28324847 is a deficient number, since it is larger than the sum of its proper divisors (1).

28324847 is an equidigital number, since it uses as much as digits as its factorization.

28324847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86016, while the sum is 38.

The square root of 28324847 is about 5322.1092623132. The cubic root of 28324847 is about 304.8287025220.

The spelling of 28324847 in words is "twenty-eight million, three hundred twenty-four thousand, eight hundred forty-seven".