56866440 has 32 divisors (see below), whose sum is σ = 170599680. Its totient is φ = 15164352.

The previous prime is 56866423. The next prime is 56866483. The reversal of 56866440 is 4466865.

56866440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×56866440³ (a number of 24 digits) contains 333 as substring.

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, 236824 + ... + 237063.

It is an arithmetic number, because the mean of its divisors is an integer number (5331240).

Almost surely, 2^56866440 is an apocalyptic number.

It is an amenable number.

56866440 is an abundant number, since it is smaller than the sum of its proper divisors (113733240).

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

56866440 is a wasteful number, since it uses less digits than its factorization.

56866440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473901 (or 473897 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 56866440 is about 7540.9840206700. The cubic root of 56866440 is about 384.5492898528.

The spelling of 56866440 in words is "fifty-six million, eight hundred sixty-six thousand, four hundred forty".