115534440 has 288 divisors, whose sum is σ = 456468480. Its totient is φ = 24820992.

The previous prime is 115534439. The next prime is 115534453. The reversal of 115534440 is 44435511.

It is a happy number.

It is a super-2 number, since 2×115534440² = 26696413652227200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 909657 + ... + 909783.

It is an arithmetic number, because the mean of its divisors is an integer number (1584960).

Almost surely, 2^115534440 is an apocalyptic number.

115534440 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 115534440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228234240).

115534440 is an abundant number, since it is smaller than the sum of its proper divisors (340934040).

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

115534440 is a wasteful number, since it uses less digits than its factorization.

115534440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 163 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 115534440 is about 10748.6948044867. The cubic root of 115534440 is about 487.0465685250.

Adding to 115534440 its reverse (44435511), we get a palindrome (159969951).

The spelling of 115534440 in words is "one hundred fifteen million, five hundred thirty-four thousand, four hundred forty".