115216992 has 168 divisors, whose sum is σ = 371838600. Its totient is φ = 34836480.

The previous prime is 115216991. The next prime is 115216993. The reversal of 115216992 is 299612511.

It is an interprime number because it is at equal distance from previous prime (115216991) and next prime (115216993).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115216991) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 256384 + ... + 256832.

It is an arithmetic number, because the mean of its divisors is an integer number (2213325).

Almost surely, 2^115216992 is an apocalyptic number.

115216992 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 115216992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185919300).

115216992 is an abundant number, since it is smaller than the sum of its proper divisors (256621608).

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

115216992 is an equidigital number, since it uses as much as digits as its factorization.

115216992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 465 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 115216992 is about 10733.9178308761. The cubic root of 115216992 is about 486.6000817976.

The spelling of 115216992 in words is "one hundred fifteen million, two hundred sixteen thousand, nine hundred ninety-two".