28943543 has 2 divisors, whose sum is σ = 28943544. Its totient is φ = 28943542.

The previous prime is 28943527. The next prime is 28943557. The reversal of 28943543 is 34534982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28943543 - 2⁴ = 28943527 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 28943497 and 28943506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28943513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14471771 + 14471772.

It is an arithmetic number, because the mean of its divisors is an integer number (14471772).

Almost surely, 2^28943543 is an apocalyptic number.

28943543 is a deficient number, since it is larger than the sum of its proper divisors (1).

28943543 is an equidigital number, since it uses as much as digits as its factorization.

28943543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The square root of 28943543 is about 5379.9203525703. The cubic root of 28943543 is about 307.0321808761.

The spelling of 28943543 in words is "twenty-eight million, nine hundred forty-three thousand, five hundred forty-three".