56869840 has 20 divisors (see below), whose sum is σ = 132222564. Its totient is φ = 22747904.

The previous prime is 56869837. The next prime is 56869867. The reversal of 56869840 is 4896865.

56869840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 31225744 + 25644096 = 5588^2 + 5064^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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 3 ways as a sum of consecutive naturals, for example, 355357 + ... + 355516.

Almost surely, 2^56869840 is an apocalyptic number.

It is an amenable number.

56869840 is an abundant number, since it is smaller than the sum of its proper divisors (75352724).

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

56869840 is a wasteful number, since it uses less digits than its factorization.

56869840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710886 (or 710880 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 56869840 is about 7541.2094520707. The cubic root of 56869840 is about 384.5569536672.

The spelling of 56869840 in words is "fifty-six million, eight hundred sixty-nine thousand, eight hundred forty".