28275823 has 2 divisors, whose sum is σ = 28275824. Its totient is φ = 28275822.

The previous prime is 28275817. The next prime is 28275829. The reversal of 28275823 is 32857282.

It is a balanced prime because it is at equal distance from previous prime (28275817) and next prime (28275829).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28275823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28275829) 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, 14137911 + 14137912.

It is an arithmetic number, because the mean of its divisors is an integer number (14137912).

Almost surely, 2^28275823 is an apocalyptic number.

28275823 is a deficient number, since it is larger than the sum of its proper divisors (1).

28275823 is an equidigital number, since it uses as much as digits as its factorization.

28275823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 37.

The square root of 28275823 is about 5317.5015749880. The cubic root of 28275823 is about 304.6527374392.

The spelling of 28275823 in words is "twenty-eight million, two hundred seventy-five thousand, eight hundred twenty-three".