28953823 has 2 divisors, whose sum is σ = 28953824. Its totient is φ = 28953822.

The previous prime is 28953817. The next prime is 28953857. The reversal of 28953823 is 32835982.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28953823 - 2⁵ = 28953791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28953523) 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, 14476911 + 14476912.

It is an arithmetic number, because the mean of its divisors is an integer number (14476912).

Almost surely, 2^28953823 is an apocalyptic number.

28953823 is a deficient number, since it is larger than the sum of its proper divisors (1).

28953823 is an equidigital number, since it uses as much as digits as its factorization.

28953823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 40.

The square root of 28953823 is about 5380.8756722303. The cubic root of 28953823 is about 307.0685265441.

The spelling of 28953823 in words is "twenty-eight million, nine hundred fifty-three thousand, eight hundred twenty-three".