28556743 has 2 divisors, whose sum is σ = 28556744. Its totient is φ = 28556742.

The previous prime is 28556741. The next prime is 28556747. The reversal of 28556743 is 34765582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28556743 - 2¹ = 28556741 is a prime.

Together with 28556741, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 28556696 and 28556705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28556741) 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, 14278371 + 14278372.

It is an arithmetic number, because the mean of its divisors is an integer number (14278372).

Almost surely, 2^28556743 is an apocalyptic number.

28556743 is a deficient number, since it is larger than the sum of its proper divisors (1).

28556743 is an equidigital number, since it uses as much as digits as its factorization.

28556743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 40.

The square root of 28556743 is about 5343.8509522628. The cubic root of 28556743 is about 305.6583218311.

The spelling of 28556743 in words is "twenty-eight million, five hundred fifty-six thousand, seven hundred forty-three".