28933543 has 2 divisors, whose sum is σ = 28933544. Its totient is φ = 28933542.

The previous prime is 28933501. The next prime is 28933547. The reversal of 28933543 is 34533982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28933543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28933547) 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, 14466771 + 14466772.

It is an arithmetic number, because the mean of its divisors is an integer number (14466772).

Almost surely, 2^28933543 is an apocalyptic number.

28933543 is a deficient number, since it is larger than the sum of its proper divisors (1).

28933543 is an equidigital number, since it uses as much as digits as its factorization.

28933543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 37.

The square root of 28933543 is about 5378.9908904924. The cubic root of 28933543 is about 306.9968169094.

The spelling of 28933543 in words is "twenty-eight million, nine hundred thirty-three thousand, five hundred forty-three".