28863719 has 2 divisors, whose sum is σ = 28863720. Its totient is φ = 28863718.

The previous prime is 28863683. The next prime is 28863721. The reversal of 28863719 is 91736882.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28863719 - 2⁸ = 28863463 is a prime.

It is a super-2 number, since 2×28863719² = 1666228549021922, which contains 22 as substring.

Together with 28863721, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28863719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28863749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14431859 + 14431860.

It is an arithmetic number, because the mean of its divisors is an integer number (14431860).

Almost surely, 2^28863719 is an apocalyptic number.

28863719 is a deficient number, since it is larger than the sum of its proper divisors (1).

28863719 is an equidigital number, since it uses as much as digits as its factorization.

28863719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 28863719 is about 5372.4965332702. The cubic root of 28863719 is about 306.7496641819.

The spelling of 28863719 in words is "twenty-eight million, eight hundred sixty-three thousand, seven hundred nineteen".