115116220 has 12 divisors (see below), whose sum is σ = 241744104. Its totient is φ = 46046480.

The previous prime is 115116191. The next prime is 115116223. The reversal of 115116220 is 22611511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115116223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2877886 + ... + 2877925.

It is an arithmetic number, because the mean of its divisors is an integer number (20145342).

Almost surely, 2^115116220 is an apocalyptic number.

115116220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115116220 is an abundant number, since it is smaller than the sum of its proper divisors (126627884).

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

115116220 is a wasteful number, since it uses less digits than its factorization.

115116220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5755820 (or 5755818 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 115116220 is about 10729.2227118277. Note that the first 3 decimals coincide. The cubic root of 115116220 is about 486.4581757427.

Adding to 115116220 its reverse (22611511), we get a palindrome (137727731).

It can be divided in two parts, 1151 and 16220, that added together give a palindrome (17371).

The spelling of 115116220 in words is "one hundred fifteen million, one hundred sixteen thousand, two hundred twenty".