115432128 has 140 divisors (see below), whose sum is σ = 391182352. Its totient is φ = 32970240.

The previous prime is 115432111. The next prime is 115432129. The reversal of 115432128 is 821234511.

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 (115432129) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34698 + ... + 37878.

Almost surely, 2^115432128 is an apocalyptic number.

115432128 is a gapful number since it is divisible by the number (18) 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 115432128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195591176).

115432128 is an abundant number, since it is smaller than the sum of its proper divisors (275750224).

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

115432128 is an equidigital number, since it uses as much as digits as its factorization.

115432128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3212 (or 3193 counting only the distinct ones).

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

The square root of 115432128 is about 10743.9344748560. The cubic root of 115432128 is about 486.9027573664.

Adding to 115432128 its reverse (821234511), we get a palindrome (936666639).

The spelling of 115432128 in words is "one hundred fifteen million, four hundred thirty-two thousand, one hundred twenty-eight".