28385023 has 2 divisors, whose sum is σ = 28385024. Its totient is φ = 28385022.

The previous prime is 28385011. The next prime is 28385029. The reversal of 28385023 is 32058382.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28385023 - 2⁵ = 28384991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28385029) 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, 14192511 + 14192512.

It is an arithmetic number, because the mean of its divisors is an integer number (14192512).

Almost surely, 2^28385023 is an apocalyptic number.

28385023 is a deficient number, since it is larger than the sum of its proper divisors (1).

28385023 is an equidigital number, since it uses as much as digits as its factorization.

28385023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 28385023 is about 5327.7596604952. The cubic root of 28385023 is about 305.0444188644.

The spelling of 28385023 in words is "twenty-eight million, three hundred eighty-five thousand, twenty-three".