115566984 has 192 divisors, whose sum is σ = 358525440. Its totient is φ = 33384960.

The previous prime is 115566953. The next prime is 115566991. The reversal of 115566984 is 489665511.

115566984 is a `hidden beast` number, since 1 + 1 + 5 + 566 + 9 + 84 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

Its product of digits (259200) is a multiple of the sum of its prime factors (180).

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 47 ways as a sum of consecutive naturals, for example, 1627669 + ... + 1627739.

It is an arithmetic number, because the mean of its divisors is an integer number (1867320).

Almost surely, 2^115566984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115566984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179262720).

115566984 is an abundant number, since it is smaller than the sum of its proper divisors (242958456).

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

115566984 is a wasteful number, since it uses less digits than its factorization.

115566984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 173 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 115566984 is about 10750.2085561165. The cubic root of 115566984 is about 487.0922950215.

The spelling of 115566984 in words is "one hundred fifteen million, five hundred sixty-six thousand, nine hundred eighty-four".