115781040 has 60 divisors (see below), whose sum is σ = 388833744. Its totient is φ = 30874752.

The previous prime is 115781027. The next prime is 115781077. The reversal of 115781040 is 40187511.

It is a tau number, because it is divible by the number of its divisors (60).

It is a junction number, because it is equal to n+sod(n) for n = 115780995 and 115781013.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79684 + ... + 81123.

Almost surely, 2^115781040 is an apocalyptic number.

115781040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115781040 is an abundant number, since it is smaller than the sum of its proper divisors (273052704).

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

115781040 is a wasteful number, since it uses less digits than its factorization.

115781040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160826 (or 160817 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 115781040 is about 10760.1598501138. The cubic root of 115781040 is about 487.3928442983.

The spelling of 115781040 in words is "one hundred fifteen million, seven hundred eighty-one thousand, forty".