115245220 has 12 divisors (see below), whose sum is σ = 242015004. Its totient is φ = 46098080.

The previous prime is 115245199. The next prime is 115245223. The reversal of 115245220 is 22542511.

It can be written as a sum of positive squares in 2 ways, for example, as 45589504 + 69655716 = 6752^2 + 8346^2 .

It is a junction number, because it is equal to n+sod(n) for n = 115245191 and 115245200.

It is not an unprimeable number, because it can be changed into a prime (115245223) 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, 2881111 + ... + 2881150.

It is an arithmetic number, because the mean of its divisors is an integer number (20167917).

Almost surely, 2^115245220 is an apocalyptic number.

115245220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115245220 is an abundant number, since it is smaller than the sum of its proper divisors (126769784).

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

115245220 is a wasteful number, since it uses less digits than its factorization.

115245220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5762270 (or 5762268 counting only the distinct ones).

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

The square root of 115245220 is about 10735.2326476886. The cubic root of 115245220 is about 486.6398173299.

Adding to 115245220 its reverse (22542511), we get a palindrome (137787731).

The spelling of 115245220 in words is "one hundred fifteen million, two hundred forty-five thousand, two hundred twenty".