28343023 has 2 divisors, whose sum is σ = 28343024. Its totient is φ = 28343022.

The previous prime is 28343011. The next prime is 28343047. The reversal of 28343023 is 32034382.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28343023 - 2⁹ = 28342511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28343093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14171511 + 14171512.

It is an arithmetic number, because the mean of its divisors is an integer number (14171512).

Almost surely, 2^28343023 is an apocalyptic number.

28343023 is a deficient number, since it is larger than the sum of its proper divisors (1).

28343023 is an equidigital number, since it uses as much as digits as its factorization.

28343023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 28343023 is about 5323.8165821148. The cubic root of 28343023 is about 304.8938912448.

The spelling of 28343023 in words is "twenty-eight million, three hundred forty-three thousand, twenty-three".