115540480 has 120 divisors (see below), whose sum is σ = 305316396. Its totient is φ = 41902080.

The previous prime is 115540471. The next prime is 115540489. The reversal of 115540480 is 84045511.

It is an interprime number because it is at equal distance from previous prime (115540471) and next prime (115540489).

It can be written as a sum of positive squares in 2 ways, for example, as 115261696 + 278784 = 10736^2 + 528^2 .

It is not an unprimeable number, because it can be changed into a prime (115540489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309574 + ... + 309946.

Almost surely, 2^115540480 is an apocalyptic number.

115540480 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 115540480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152658198).

115540480 is an abundant number, since it is smaller than the sum of its proper divisors (189775916).

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

115540480 is an equidigital number, since it uses as much as digits as its factorization.

115540480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 115540480 is about 10748.9757651601. The cubic root of 115540480 is about 487.0550557779.

Adding to 115540480 its reverse (84045511), we get a palindrome (199585991).

The spelling of 115540480 in words is "one hundred fifteen million, five hundred forty thousand, four hundred eighty".