115440330 has 64 divisors (see below), whose sum is σ = 285143040. Its totient is φ = 29899584.

The previous prime is 115440323. The next prime is 115440331. The reversal of 115440330 is 33044511.

It is a junction number, because it is equal to n+sod(n) for n = 115440297 and 115440306.

It is not an unprimeable number, because it can be changed into a prime (115440331) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 158427 + ... + 159153.

It is an arithmetic number, because the mean of its divisors is an integer number (4455360).

Almost surely, 2^115440330 is an apocalyptic number.

115440330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 115440330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142571520).

115440330 is an abundant number, since it is smaller than the sum of its proper divisors (169702710).

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

115440330 is a wasteful number, since it uses less digits than its factorization.

115440330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 883.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 115440330 is about 10744.3161718185. The cubic root of 115440330 is about 486.9142893431.

Adding to 115440330 its reverse (33044511), we get a palindrome (148484841).

The spelling of 115440330 in words is "one hundred fifteen million, four hundred forty thousand, three hundred thirty".