115405644 has 12 divisors (see below), whose sum is σ = 269279864. Its totient is φ = 38468544.

The previous prime is 115405643. The next prime is 115405687. The reversal of 115405644 is 446504511.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (115405643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4808557 + ... + 4808580.

Almost surely, 2^115405644 is an apocalyptic number.

It is an amenable number.

115405644 is an abundant number, since it is smaller than the sum of its proper divisors (153874220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115405644 is a wasteful number, since it uses less digits than its factorization.

115405644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9617144 (or 9617142 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 115405644 is about 10742.7018947749. The cubic root of 115405644 is about 486.8655172463.

The spelling of 115405644 in words is "one hundred fifteen million, four hundred five thousand, six hundred forty-four".