115996240 has 20 divisors (see below), whose sum is σ = 269691444. Its totient is φ = 46398464.

The previous prime is 115996213. The next prime is 115996247. The reversal of 115996240 is 42699511.

It can be written as a sum of positive squares in 2 ways, for example, as 36144144 + 79852096 = 6012^2 + 8936^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 115996240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115996247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 724897 + ... + 725056.

Almost surely, 2^115996240 is an apocalyptic number.

115996240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115996240 is an abundant number, since it is smaller than the sum of its proper divisors (153695204).

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

115996240 is a wasteful number, since it uses less digits than its factorization.

115996240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449966 (or 1449960 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 115996240 is about 10770.1550592366. The cubic root of 115996240 is about 487.6946266492.

The spelling of 115996240 in words is "one hundred fifteen million, nine hundred ninety-six thousand, two hundred forty".