115515040 has 48 divisors (see below), whose sum is σ = 279576360. Its totient is φ = 45076480.

The previous prime is 115515019. The next prime is 115515053. The reversal of 115515040 is 40515511.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 76527504 + 38987536 = 8748^2 + 6244^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2245 + ... + 15364.

Almost surely, 2^115515040 is an apocalyptic number.

115515040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115515040 is an abundant number, since it is smaller than the sum of its proper divisors (164061320).

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

115515040 is a wasteful number, since it uses less digits than its factorization.

115515040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17665 (or 17657 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 115515040 is about 10747.7923314511. The cubic root of 115515040 is about 487.0193061424.

The spelling of 115515040 in words is "one hundred fifteen million, five hundred fifteen thousand, forty".