115244240 has 20 divisors (see below), whose sum is σ = 267943044. Its totient is φ = 46097664.

The previous prime is 115244219. The next prime is 115244279. The reversal of 115244240 is 42442511.

It can be written as a sum of positive squares in 2 ways, for example, as 85082176 + 30162064 = 9224^2 + 5492^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720197 + ... + 720356.

Almost surely, 2^115244240 is an apocalyptic number.

115244240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115244240 is an abundant number, since it is smaller than the sum of its proper divisors (152698804).

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

115244240 is a wasteful number, since it uses less digits than its factorization.

115244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440566 (or 1440560 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 115244240 is about 10735.1870034946. The cubic root of 115244240 is about 486.6384379281.

Adding to 115244240 its reverse (42442511), we get a palindrome (157686751).

The spelling of 115244240 in words is "one hundred fifteen million, two hundred forty-four thousand, two hundred forty".