115839840 has 48 divisors (see below), whose sum is σ = 364897008. Its totient is φ = 30890496.

The previous prime is 115839809. The next prime is 115839869. The reversal of 115839840 is 48938511.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120187 + ... + 121146.

It is an arithmetic number, because the mean of its divisors is an integer number (7602021).

Almost surely, 2^115839840 is an apocalyptic number.

115839840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115839840 is an abundant number, since it is smaller than the sum of its proper divisors (249057168).

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

115839840 is a wasteful number, since it uses less digits than its factorization.

115839840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241351 (or 241343 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 115839840 is about 10762.8918047149. The cubic root of 115839840 is about 487.4753386604.

The spelling of 115839840 in words is "one hundred fifteen million, eight hundred thirty-nine thousand, eight hundred forty".