115780992 has 128 divisors (see below), whose sum is σ = 327909600. Its totient is φ = 36126720.

The previous prime is 115780981. The next prime is 115781009. The reversal of 115780992 is 299087511.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 411892 + ... + 412172.

Almost surely, 2^115780992 is an apocalyptic number.

115780992 is a gapful number since it is divisible by the number (12) 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 115780992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163954800).

115780992 is an abundant number, since it is smaller than the sum of its proper divisors (212128608).

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

115780992 is a wasteful number, since it uses less digits than its factorization.

115780992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 115780992 is about 10760.1576196634. The cubic root of 115780992 is about 487.3927769446.

The spelling of 115780992 in words is "one hundred fifteen million, seven hundred eighty thousand, nine hundred ninety-two".