28917743 has 2 divisors, whose sum is σ = 28917744. Its totient is φ = 28917742.

The previous prime is 28917719. The next prime is 28917767. The reversal of 28917743 is 34771982.

It is a balanced prime because it is at equal distance from previous prime (28917719) and next prime (28917767).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28917743 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28917743.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28917703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14458871 + 14458872.

It is an arithmetic number, because the mean of its divisors is an integer number (14458872).

Almost surely, 2^28917743 is an apocalyptic number.

28917743 is a deficient number, since it is larger than the sum of its proper divisors (1).

28917743 is an equidigital number, since it uses as much as digits as its factorization.

28917743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 84672, while the sum is 41.

The square root of 28917743 is about 5377.5220129721. The cubic root of 28917743 is about 306.9409252302.

The spelling of 28917743 in words is "twenty-eight million, nine hundred seventeen thousand, seven hundred forty-three".