115817938 has 16 divisors (see below), whose sum is σ = 181471680. Its totient is φ = 55366416.

The previous prime is 115817929. The next prime is 115817959. The reversal of 115817938 is 839718511.

It is a junction number, because it is equal to n+sod(n) for n = 115817894 and 115817903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3720 + ... + 15667.

It is an arithmetic number, because the mean of its divisors is an integer number (11341980).

Almost surely, 2^115817938 is an apocalyptic number.

115817938 is a deficient number, since it is larger than the sum of its proper divisors (65653742).

115817938 is a wasteful number, since it uses less digits than its factorization.

115817938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19521.

The product of its digits is 60480, while the sum is 43.

The square root of 115817938 is about 10761.8742791393. The cubic root of 115817938 is about 487.4446141767. Note that the first 3 decimals are identical.

The spelling of 115817938 in words is "one hundred fifteen million, eight hundred seventeen thousand, nine hundred thirty-eight".