28000543 has 2 divisors, whose sum is σ = 28000544. Its totient is φ = 28000542.

The previous prime is 28000541. The next prime is 28000559. The reversal of 28000543 is 34500082.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28000543 - 2¹ = 28000541 is a prime.

Together with 28000541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28000541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14000271 + 14000272.

It is an arithmetic number, because the mean of its divisors is an integer number (14000272).

Almost surely, 2^28000543 is an apocalyptic number.

28000543 is a deficient number, since it is larger than the sum of its proper divisors (1).

28000543 is an equidigital number, since it uses as much as digits as its factorization.

28000543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 28000543 is about 5291.5539305576. The cubic root of 28000543 is about 303.6608601127.

The spelling of 28000543 in words is "twenty-eight million, five hundred forty-three", and thus it is an aban number.