115840218 has 32 divisors (see below), whose sum is σ = 251024256. Its totient is φ = 35425728.

The previous prime is 115840217. The next prime is 115840243. The reversal of 115840218 is 812048511.

It is a happy number.

It is a super-3 number, since 3×115840218³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (115840217) 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, 8580 + ... + 17472.

It is an arithmetic number, because the mean of its divisors is an integer number (7844508).

Almost surely, 2^115840218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115840218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125512128).

115840218 is an abundant number, since it is smaller than the sum of its proper divisors (135184038).

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

115840218 is a wasteful number, since it uses less digits than its factorization.

115840218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9078.

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 115840218 is about 10762.9093650369. The cubic root of 115840218 is about 487.4758688910.

Adding to 115840218 its reverse (812048511), we get a palindrome (927888729).

The spelling of 115840218 in words is "one hundred fifteen million, eight hundred forty thousand, two hundred eighteen".