115438122 has 48 divisors (see below), whose sum is σ = 260638560. Its totient is φ = 38292912.

The previous prime is 115438121. The next prime is 115438133. The reversal of 115438122 is 221834511.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (115438121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130293 + ... + 131175.

It is an arithmetic number, because the mean of its divisors is an integer number (5429970).

Almost surely, 2^115438122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115438122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130319280).

115438122 is an abundant number, since it is smaller than the sum of its proper divisors (145200438).

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

115438122 is an equidigital number, since it uses as much as digits as its factorization.

115438122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1157 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 115438122 is about 10744.2134193248. The cubic root of 115438122 is about 486.9111849584.

The spelling of 115438122 in words is "one hundred fifteen million, four hundred thirty-eight thousand, one hundred twenty-two".