115659280 has 40 divisors (see below), whose sum is σ = 293356224. Its totient is φ = 42057600.

The previous prime is 115659263. The next prime is 115659283. The reversal of 115659280 is 82956511.

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

It is not an unprimeable number, because it can be changed into a prime (115659283) by changing a digit.

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, 64836 + ... + 66595.

Almost surely, 2^115659280 is an apocalyptic number.

115659280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115659280 is an abundant number, since it is smaller than the sum of its proper divisors (177696944).

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

115659280 is a wasteful number, since it uses less digits than its factorization.

115659280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131455 (or 131449 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 37.

The square root of 115659280 is about 10754.5004532986. The cubic root of 115659280 is about 487.2219303960.

The spelling of 115659280 in words is "one hundred fifteen million, six hundred fifty-nine thousand, two hundred eighty".