28322743 has 2 divisors, whose sum is σ = 28322744. Its totient is φ = 28322742.

The previous prime is 28322719. The next prime is 28322761. The reversal of 28322743 is 34722382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28322743 - 2¹⁷ = 28191671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28322713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14161371 + 14161372.

It is an arithmetic number, because the mean of its divisors is an integer number (14161372).

Almost surely, 2^28322743 is an apocalyptic number.

28322743 is a deficient number, since it is larger than the sum of its proper divisors (1).

28322743 is an equidigital number, since it uses as much as digits as its factorization.

28322743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 31.

The square root of 28322743 is about 5321.9115926516. The cubic root of 28322743 is about 304.8211546676.

The spelling of 28322743 in words is "twenty-eight million, three hundred twenty-two thousand, seven hundred forty-three".