115728717 has 8 divisors (see below), whose sum is σ = 166174624. Its totient is φ = 71217648.

The previous prime is 115728713. The next prime is 115728721. The reversal of 115728717 is 717827511.

It is an interprime number because it is at equal distance from previous prime (115728713) and next prime (115728721).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 115728717 - 2² = 115728713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2967403 = 115728717 / (1 + 1 + 5 + 7 + 2 + 8 + 7 + 1 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115728713) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1483663 + ... + 1483740.

It is an arithmetic number, because the mean of its divisors is an integer number (20771828).

Almost surely, 2^115728717 is an apocalyptic number.

It is an amenable number.

115728717 is a deficient number, since it is larger than the sum of its proper divisors (50445907).

115728717 is a wasteful number, since it uses less digits than its factorization.

115728717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2967419.

The product of its digits is 27440, while the sum is 39.

The square root of 115728717 is about 10757.7282453128. The cubic root of 115728717 is about 487.3194134548.

The spelling of 115728717 in words is "one hundred fifteen million, seven hundred twenty-eight thousand, seven hundred seventeen".