115728757 has 2 divisors, whose sum is σ = 115728758. Its totient is φ = 115728756.

The previous prime is 115728737. The next prime is 115728779. The reversal of 115728757 is 757827511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114789796 + 938961 = 10714^2 + 969^2 .

It is a cyclic number.

It is not a de Polignac number, because 115728757 - 2¹⁵ = 115695989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115728727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57864378 + 57864379.

It is an arithmetic number, because the mean of its divisors is an integer number (57864379).

Almost surely, 2^115728757 is an apocalyptic number.

It is an amenable number.

115728757 is a deficient number, since it is larger than the sum of its proper divisors (1).

115728757 is an equidigital number, since it uses as much as digits as its factorization.

115728757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 137200, while the sum is 43.

The square root of 115728757 is about 10757.7301044412. The cubic root of 115728757 is about 487.3194695998.

The spelling of 115728757 in words is "one hundred fifteen million, seven hundred twenty-eight thousand, seven hundred fifty-seven".