28748543 has 2 divisors, whose sum is σ = 28748544. Its totient is φ = 28748542.

The previous prime is 28748521. The next prime is 28748579. The reversal of 28748543 is 34584782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28748543 - 2¹² = 28744447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28748543.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28748243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14374271 + 14374272.

It is an arithmetic number, because the mean of its divisors is an integer number (14374272).

Almost surely, 2^28748543 is an apocalyptic number.

28748543 is a deficient number, since it is larger than the sum of its proper divisors (1).

28748543 is an equidigital number, since it uses as much as digits as its factorization.

28748543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 41.

The square root of 28748543 is about 5361.7667797098. The cubic root of 28748543 is about 306.3411086417.

The spelling of 28748543 in words is "twenty-eight million, seven hundred forty-eight thousand, five hundred forty-three".