115985856 has 112 divisors (see below), whose sum is σ = 353242880. Its totient is φ = 32901120.

The previous prime is 115985851. The next prime is 115985867. The reversal of 115985856 is 658589511.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115985851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283380 + ... + 283788.

Almost surely, 2^115985856 is an apocalyptic number.

115985856 is a gapful number since it is divisible by the number (16) 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 115985856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176621440).

115985856 is an abundant number, since it is smaller than the sum of its proper divisors (237257024).

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

115985856 is a wasteful number, since it uses less digits than its factorization.

115985856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 632 counting only the distinct ones).

The product of its digits is 432000, while the sum is 48.

The square root of 115985856 is about 10769.6729755364. The cubic root of 115985856 is about 487.6800733840.

The spelling of 115985856 in words is "one hundred fifteen million, nine hundred eighty-five thousand, eight hundred fifty-six".