115565240 has 64 divisors (see below), whose sum is σ = 298460160. Its totient is φ = 39450240.

The previous prime is 115565189. The next prime is 115565257. The reversal of 115565240 is 42565511.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75119 + ... + 76641.

It is an arithmetic number, because the mean of its divisors is an integer number (4663440).

Almost surely, 2^115565240 is an apocalyptic number.

115565240 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 115565240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149230080).

115565240 is an abundant number, since it is smaller than the sum of its proper divisors (182894920).

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

115565240 is a wasteful number, since it uses less digits than its factorization.

115565240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812 (or 1808 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 115565240 is about 10750.1274411051. The cubic root of 115565240 is about 487.0898448026.

The spelling of 115565240 in words is "one hundred fifteen million, five hundred sixty-five thousand, two hundred forty".