115523020 has 72 divisors (see below), whose sum is σ = 259202160. Its totient is φ = 43232640.

The previous prime is 115523017. The next prime is 115523027. The reversal of 115523020 is 20325511.

It is not an unprimeable number, because it can be changed into a prime (115523027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 645291 + ... + 645469.

It is an arithmetic number, because the mean of its divisors is an integer number (3600030).

Almost surely, 2^115523020 is an apocalyptic number.

115523020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115523020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129601080).

115523020 is an abundant number, since it is smaller than the sum of its proper divisors (143679140).

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

115523020 is a wasteful number, since it uses less digits than its factorization.

115523020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 115523020 is about 10748.1635640699. The cubic root of 115523020 is about 487.0305206260.

Adding to 115523020 its reverse (20325511), we get a palindrome (135848531).

The spelling of 115523020 in words is "one hundred fifteen million, five hundred twenty-three thousand, twenty".