115913540 has 24 divisors (see below), whose sum is σ = 246503040. Its totient is φ = 45777888.

The previous prime is 115913533. The next prime is 115913549. The reversal of 115913540 is 45319511.

It is not an unprimeable number, because it can be changed into a prime (115913549) 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 7 ways as a sum of consecutive naturals, for example, 35102 + ... + 38261.

It is an arithmetic number, because the mean of its divisors is an integer number (10270960).

Almost surely, 2^115913540 is an apocalyptic number.

115913540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115913540 is an abundant number, since it is smaller than the sum of its proper divisors (130589500).

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

115913540 is a wasteful number, since it uses less digits than its factorization.

115913540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73451 (or 73449 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 115913540 is about 10766.3150613383. The cubic root of 115913540 is about 487.5786977925.

The spelling of 115913540 in words is "one hundred fifteen million, nine hundred thirteen thousand, five hundred forty".