115312240 has 40 divisors (see below), whose sum is σ = 274344048. Its totient is φ = 45050880.

The previous prime is 115312229. The next prime is 115312277. The reversal of 115312240 is 42213511.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13321 + ... + 20200.

Almost surely, 2^115312240 is an apocalyptic number.

115312240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115312240 is an abundant number, since it is smaller than the sum of its proper divisors (159031808).

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

115312240 is a wasteful number, since it uses less digits than its factorization.

115312240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33577 (or 33571 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 115312240 is about 10738.3536913253. The cubic root of 115312240 is about 486.7341329707.

Adding to 115312240 its reverse (42213511), we get a palindrome (157525751).

The spelling of 115312240 in words is "one hundred fifteen million, three hundred twelve thousand, two hundred forty".