115684218 has 72 divisors (see below), whose sum is σ = 287506908. Its totient is φ = 33486336.

The previous prime is 115684211. The next prime is 115684229. The reversal of 115684218 is 812486511.

It can be written as a sum of positive squares in 6 ways, for example, as 48066489 + 67617729 = 6933^2 + 8223^2 .

It is not an unprimeable number, because it can be changed into a prime (115684211) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 50596 + ... + 52832.

Almost surely, 2^115684218 is an apocalyptic number.

115684218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115684218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143753454).

115684218 is an abundant number, since it is smaller than the sum of its proper divisors (171822690).

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

115684218 is a wasteful number, since it uses less digits than its factorization.

115684218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288 (or 2272 counting only the distinct ones).

The product of its digits is 15360, while the sum is 36.

The square root of 115684218 is about 10755.6598123964. The cubic root of 115684218 is about 487.2569455063.

The spelling of 115684218 in words is "one hundred fifteen million, six hundred eighty-four thousand, two hundred eighteen".