28713677 has 2 divisors, whose sum is σ = 28713678. Its totient is φ = 28713676.

The previous prime is 28713667. The next prime is 28713689. The reversal of 28713677 is 77631782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28026436 + 687241 = 5294^2 + 829^2 .

It is a cyclic number.

It is not a de Polignac number, because 28713677 - 2⁶ = 28713613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28713667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14356838 + 14356839.

It is an arithmetic number, because the mean of its divisors is an integer number (14356839).

Almost surely, 2^28713677 is an apocalyptic number.

It is an amenable number.

28713677 is a deficient number, since it is larger than the sum of its proper divisors (1).

28713677 is an equidigital number, since it uses as much as digits as its factorization.

28713677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 41.

The square root of 28713677 is about 5358.5144396558. The cubic root of 28713677 is about 306.2172158714.

The spelling of 28713677 in words is "twenty-eight million, seven hundred thirteen thousand, six hundred seventy-seven".