115805930 has 16 divisors (see below), whose sum is σ = 214085160. Its totient is φ = 45070272.

The previous prime is 115805927. The next prime is 115805939. The reversal of 115805930 is 39508511.

It can be written as a sum of positive squares in 4 ways, for example, as 113145769 + 2660161 = 10637^2 + 1631^2 .

It is a super-2 number, since 2×115805930² = 26822026846329800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (115805939) 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, 156125 + ... + 156864.

Almost surely, 2^115805930 is an apocalyptic number.

115805930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115805930 is a deficient number, since it is larger than the sum of its proper divisors (98279230).

115805930 is a wasteful number, since it uses less digits than its factorization.

115805930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313033.

The product of its (nonzero) digits is 5400, while the sum is 32.

The square root of 115805930 is about 10761.3163692924. The cubic root of 115805930 is about 487.4277675140.

The spelling of 115805930 in words is "one hundred fifteen million, eight hundred five thousand, nine hundred thirty".