56380866 has 32 divisors (see below), whose sum is σ = 123863040. Its totient is φ = 17029584.

The previous prime is 56380837. The next prime is 56380903. The reversal of 56380866 is 66808365.

56380866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 8130 + ... + 13373.

It is an arithmetic number, because the mean of its divisors is an integer number (3870720).

Almost surely, 2^56380866 is an apocalyptic number.

56380866 is an abundant number, since it is smaller than the sum of its proper divisors (67482174).

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

56380866 is a wasteful number, since it uses less digits than its factorization.

56380866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21550.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 56380866 is about 7508.7193315505. The cubic root of 56380866 is about 383.4516233974.

The spelling of 56380866 in words is "fifty-six million, three hundred eighty thousand, eight hundred sixty-six".