115804865 has 12 divisors (see below), whose sum is σ = 152748372. Its totient is φ = 84221280.

The previous prime is 115804861. The next prime is 115804879. The reversal of 115804865 is 568408511.

It can be written as a sum of positive squares in 2 ways, for example, as 34245904 + 81558961 = 5852^2 + 9031^2 .

It is not a de Polignac number, because 115804865 - 2² = 115804861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115804861) 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 in 11 ways as a sum of consecutive naturals, for example, 95102 + ... + 96311.

It is an arithmetic number, because the mean of its divisors is an integer number (12729031).

Almost surely, 2^115804865 is an apocalyptic number.

It is an amenable number.

115804865 is a deficient number, since it is larger than the sum of its proper divisors (36943507).

115804865 is a wasteful number, since it uses less digits than its factorization.

115804865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191440 (or 191429 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 115804865 is about 10761.2668863847. The cubic root of 115804865 is about 487.4262733125.

The spelling of 115804865 in words is "one hundred fifteen million, eight hundred four thousand, eight hundred sixty-five".