115443240 has 128 divisors (see below), whose sum is σ = 397785600. Its totient is φ = 26507520.

The previous prime is 115443203. The next prime is 115443247. The reversal of 115443240 is 42344511.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 115443240.

It is not an unprimeable number, because it can be changed into a prime (115443247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22779 + ... + 27381.

It is an arithmetic number, because the mean of its divisors is an integer number (3107700).

Almost surely, 2^115443240 is an apocalyptic number.

115443240 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 115443240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198892800).

115443240 is an abundant number, since it is smaller than the sum of its proper divisors (282342360).

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

115443240 is a wasteful number, since it uses less digits than its factorization.

115443240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4647 (or 4643 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 115443240 is about 10744.4515914029. The cubic root of 115443240 is about 486.9183806593.

Adding to 115443240 its reverse (42344511), we get a palindrome (157787751).

The spelling of 115443240 in words is "one hundred fifteen million, four hundred forty-three thousand, two hundred forty".