115045220 has 12 divisors (see below), whose sum is σ = 241595004. Its totient is φ = 46018080.

The previous prime is 115045219. The next prime is 115045243. The reversal of 115045220 is 22540511.

It can be written as a sum of positive squares in 2 ways, for example, as 86229796 + 28815424 = 9286^2 + 5368^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5752261 = 115045220 / (1 + 1 + 5 + 0 + 4 + 5 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 115045192 and 115045201.

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, 2876111 + ... + 2876150.

It is an arithmetic number, because the mean of its divisors is an integer number (20132917).

Almost surely, 2^115045220 is an apocalyptic number.

115045220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115045220 is an abundant number, since it is smaller than the sum of its proper divisors (126549784).

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

115045220 is a wasteful number, since it uses less digits than its factorization.

115045220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5752270 (or 5752268 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 115045220 is about 10725.9134809115. The cubic root of 115045220 is about 486.3581445636.

Adding to 115045220 its reverse (22540511), we get a palindrome (137585731).

The spelling of 115045220 in words is "one hundred fifteen million, forty-five thousand, two hundred twenty".