115107220 has 12 divisors (see below), whose sum is σ = 241725204. Its totient is φ = 46042880.

The previous prime is 115107217. The next prime is 115107229. The reversal of 115107220 is 22701511.

It can be written as a sum of positive squares in 2 ways, for example, as 73582084 + 41525136 = 8578^2 + 6444^2 .

It is a super-2 number, since 2×115107220² = 26499344192256800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115107229) 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, 2877661 + ... + 2877700.

It is an arithmetic number, because the mean of its divisors is an integer number (20143767).

Almost surely, 2^115107220 is an apocalyptic number.

115107220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115107220 is an abundant number, since it is smaller than the sum of its proper divisors (126617984).

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

115107220 is a wasteful number, since it uses less digits than its factorization.

115107220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5755370 (or 5755368 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 115107220 is about 10728.8032883449. The cubic root of 115107220 is about 486.4454980109.

Adding to 115107220 its reverse (22701511), we get a palindrome (137808731).

The spelling of 115107220 in words is "one hundred fifteen million, one hundred seven thousand, two hundred twenty".