28716841 has 2 divisors, whose sum is σ = 28716842. Its totient is φ = 28716840.

The previous prime is 28716839. The next prime is 28716899. The reversal of 28716841 is 14861782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24800400 + 3916441 = 4980^2 + 1979^2 .

It is a cyclic number.

It is not a de Polignac number, because 28716841 - 2¹ = 28716839 is a prime.

Together with 28716839, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28716841.

It is not a weakly prime, because it can be changed into another prime (28716041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14358420 + 14358421.

It is an arithmetic number, because the mean of its divisors is an integer number (14358421).

Almost surely, 2^28716841 is an apocalyptic number.

It is an amenable number.

28716841 is a deficient number, since it is larger than the sum of its proper divisors (1).

28716841 is an equidigital number, since it uses as much as digits as its factorization.

28716841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 37.

The square root of 28716841 is about 5358.8096626023. The cubic root of 28716841 is about 306.2284629586.

The spelling of 28716841 in words is "twenty-eight million, seven hundred sixteen thousand, eight hundred forty-one".