115409216 has 112 divisors (see below), whose sum is σ = 265931904. Its totient is φ = 49268736.

The previous prime is 115409207. The next prime is 115409221. The reversal of 115409216 is 612904511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 707951 + ... + 708113.

It is an arithmetic number, because the mean of its divisors is an integer number (2374392).

Almost surely, 2^115409216 is an apocalyptic number.

115409216 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 115409216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132965952).

115409216 is an abundant number, since it is smaller than the sum of its proper divisors (150522688).

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

115409216 is a wasteful number, since it uses less digits than its factorization.

115409216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 238 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 115409216 is about 10742.8681458910. The cubic root of 115409216 is about 486.8705402984.

The spelling of 115409216 in words is "one hundred fifteen million, four hundred nine thousand, two hundred sixteen".