115987312 has 60 divisors (see below), whose sum is σ = 262788240. Its totient is φ = 49448448.

The previous prime is 115987303. The next prime is 115987369. The reversal of 115987312 is 213789511.

It is a congruent number.

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, 263989 + ... + 264427.

It is an arithmetic number, because the mean of its divisors is an integer number (4379804).

Almost surely, 2^115987312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115987312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131394120).

115987312 is an abundant number, since it is smaller than the sum of its proper divisors (146800928).

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

115987312 is a wasteful number, since it uses less digits than its factorization.

115987312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 785 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The square root of 115987312 is about 10769.7405725486. The cubic root of 115987312 is about 487.6821140329.

The spelling of 115987312 in words is "one hundred fifteen million, nine hundred eighty-seven thousand, three hundred twelve".