115542220 has 12 divisors (see below), whose sum is σ = 242638704. Its totient is φ = 46216880.

The previous prime is 115542209. The next prime is 115542233. The reversal of 115542220 is 22245511.

It is a junction number, because it is equal to n+sod(n) for n = 115542191 and 115542200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2888536 + ... + 2888575.

It is an arithmetic number, because the mean of its divisors is an integer number (20219892).

Almost surely, 2^115542220 is an apocalyptic number.

115542220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115542220 is an abundant number, since it is smaller than the sum of its proper divisors (127096484).

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

115542220 is a wasteful number, since it uses less digits than its factorization.

115542220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777120 (or 5777118 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 115542220 is about 10749.0567027996. The cubic root of 115542220 is about 487.0575007263.

Adding to 115542220 its reverse (22245511), we get a palindrome (137787731).

The spelling of 115542220 in words is "one hundred fifteen million, five hundred forty-two thousand, two hundred twenty".