115546640 has 40 divisors (see below), whose sum is σ = 293070528. Its totient is φ = 42016640.

The previous prime is 115546621. The next prime is 115546661. The reversal of 115546640 is 46645511.

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

It is a junction number, because it is equal to n+sod(n) for n = 115546597 and 115546606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64772 + ... + 66531.

Almost surely, 2^115546640 is an apocalyptic number.

115546640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115546640 is an abundant number, since it is smaller than the sum of its proper divisors (177523888).

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

115546640 is a wasteful number, since it uses less digits than its factorization.

115546640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131327 (or 131321 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 115546640 is about 10749.2623002697. The cubic root of 115546640 is about 487.0637113470.

The spelling of 115546640 in words is "one hundred fifteen million, five hundred forty-six thousand, six hundred forty".