28928365757 has 2 divisors, whose sum is σ = 28928365758. Its totient is φ = 28928365756.

The previous prime is 28928365681. The next prime is 28928365787. The reversal of 28928365757 is 75756382982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21697584601 + 7230781156 = 147301^2 + 85034^2 .

It is a cyclic number.

It is not a de Polignac number, because 28928365757 - 2¹⁶ = 28928300221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28928365757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28928365787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14464182878 + 14464182879.

It is an arithmetic number, because the mean of its divisors is an integer number (14464182879).

Almost surely, 2^28928365757 is an apocalyptic number.

It is an amenable number.

28928365757 is a deficient number, since it is larger than the sum of its proper divisors (1).

28928365757 is an equidigital number, since it uses as much as digits as its factorization.

28928365757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50803200, while the sum is 62.

The spelling of 28928365757 in words is "twenty-eight billion, nine hundred twenty-eight million, three hundred sixty-five thousand, seven hundred fifty-seven".