115220 has 24 divisors (see below), whose sum is σ = 276864. Its totient is φ = 39456.

The previous prime is 115211. The next prime is 115223. The reversal of 115220 is 22511.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 115220.

It is not an unprimeable number, because it can be changed into a prime (115223) by changing a digit.

115220 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272 + ... + 551.

It is an arithmetic number, because the mean of its divisors is an integer number (11536).

2¹¹⁵²²⁰ is an apocalyptic number.

115220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115220 is an abundant number, since it is smaller than the sum of its proper divisors (161644).

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

115220 is a wasteful number, since it uses less digits than its factorization.

115220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839 (or 837 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 11.

The square root of 115220 is about 339.4407164734. The cubic root of 115220 is about 48.6604316359.

Adding to 115220 its reverse (22511), we get a palindrome (137731).

The spelling of 115220 in words is "one hundred fifteen thousand, two hundred twenty".