115912440 has 144 divisors (see below), whose sum is σ = 438286680. Its totient is φ = 26490240.

The previous prime is 115912439. The next prime is 115912463. The reversal of 115912440 is 44219511.

115912440 is a `hidden beast` number, since 11 + 591 + 24 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 14355 + ... + 20925.

Almost surely, 2^115912440 is an apocalyptic number.

115912440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115912440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219143340).

115912440 is an abundant number, since it is smaller than the sum of its proper divisors (322374240).

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

115912440 is a wasteful number, since it uses less digits than its factorization.

115912440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6602 (or 6588 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 115912440 is about 10766.2639759575. The cubic root of 115912440 is about 487.5771554410.

The spelling of 115912440 in words is "one hundred fifteen million, nine hundred twelve thousand, four hundred forty".