56347840 has 28 divisors (see below), whose sum is σ = 134179056. Its totient is φ = 22539008.

The previous prime is 56347831. The next prime is 56347849. The reversal of 56347840 is 4874365.

56347840 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 (56347831) and next prime (56347849).

It is a self number, because there is not a number n which added to its sum of digits gives 56347840.

It is not an unprimeable number, because it can be changed into a prime (56347849) 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, 87724 + ... + 88363.

Almost surely, 2^56347840 is an apocalyptic number.

It is an amenable number.

56347840 is an abundant number, since it is smaller than the sum of its proper divisors (77831216).

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

56347840 is a wasteful number, since it uses less digits than its factorization.

56347840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176104 (or 176094 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 56347840 is about 7506.5198327854. The cubic root of 56347840 is about 383.3767377863.

The spelling of 56347840 in words is "fifty-six million, three hundred forty-seven thousand, eight hundred forty".