115544478 has 64 divisors (see below), whose sum is σ = 286530048. Its totient is φ = 30305280.

The previous prime is 115544441. The next prime is 115544503. The reversal of 115544478 is 874445511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27301 + ... + 31247.

It is an arithmetic number, because the mean of its divisors is an integer number (4477032).

Almost surely, 2^115544478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115544478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143265024).

115544478 is an abundant number, since it is smaller than the sum of its proper divisors (170985570).

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

115544478 is a wasteful number, since it uses less digits than its factorization.

115544478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017.

The product of its digits is 89600, while the sum is 39.

The square root of 115544478 is about 10749.1617347587. The cubic root of 115544478 is about 487.0606735021.

Adding to 115544478 its reverse (874445511), we get a palindrome (989989989).

The spelling of 115544478 in words is "one hundred fifteen million, five hundred forty-four thousand, four hundred seventy-eight".