115428144 has 80 divisors (see below), whose sum is σ = 324166752. Its totient is φ = 35180544.

The previous prime is 115428143. The next prime is 115428151. The reversal of 115428144 is 441824511.

It is not an unprimeable number, because it can be changed into a prime (115428143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69694 + ... + 71330.

Almost surely, 2^115428144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115428144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162083376).

115428144 is an abundant number, since it is smaller than the sum of its proper divisors (208738608).

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

115428144 is a wasteful number, since it uses less digits than its factorization.

115428144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774 (or 1768 counting only the distinct ones).

The product of its digits is 5120, while the sum is 30.

The square root of 115428144 is about 10743.7490663176. The cubic root of 115428144 is about 486.8971556825.

The spelling of 115428144 in words is "one hundred fifteen million, four hundred twenty-eight thousand, one hundred forty-four".