56840440 has 16 divisors (see below), whose sum is σ = 127891080. Its totient is φ = 22736160.

The previous prime is 56840431. The next prime is 56840449. The reversal of 56840440 is 4404865.

56840440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (56840431) and next prime (56840449).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56840449) by changing a digit.

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, 710466 + ... + 710545.

Almost surely, 2^56840440 is an apocalyptic number.

It is an amenable number.

56840440 is an abundant number, since it is smaller than the sum of its proper divisors (71050640).

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

56840440 is a wasteful number, since it uses less digits than its factorization.

56840440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1421022 (or 1421018 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 56840440 is about 7539.2599106278. The cubic root of 56840440 is about 384.4906741109.

The spelling of 56840440 in words is "fifty-six million, eight hundred forty thousand, four hundred forty".