28923823 has 2 divisors, whose sum is σ = 28923824. Its totient is φ = 28923822.

The previous prime is 28923803. The next prime is 28923827. The reversal of 28923823 is 32832982.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28923823 is a prime.

It is equal to p_1795285 and since 28923823 and 1795285 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28923827) 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, 14461911 + 14461912.

It is an arithmetic number, because the mean of its divisors is an integer number (14461912).

Almost surely, 2^28923823 is an apocalyptic number.

28923823 is a deficient number, since it is larger than the sum of its proper divisors (1).

28923823 is an equidigital number, since it uses as much as digits as its factorization.

28923823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 37.

The square root of 28923823 is about 5378.0872994030. The cubic root of 28923823 is about 306.9624353235.

The spelling of 28923823 in words is "twenty-eight million, nine hundred twenty-three thousand, eight hundred twenty-three".