56463840 has 144 divisors (see below), whose sum is σ = 194948208. Its totient is φ = 14880768.

The previous prime is 56463829. The next prime is 56463863. The reversal of 56463840 is 4836465.

56463840 is a `hidden beast` number, since 5 + 646 + 3 + 8 + 4 + 0 = 666.

56463840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 56463795 and 56463804.

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 23 ways as a sum of consecutive naturals, for example, 162547 + ... + 162893.

It is an arithmetic number, because the mean of its divisors is an integer number (1353807).

Almost surely, 2^56463840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56463840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97474104).

56463840 is an abundant number, since it is smaller than the sum of its proper divisors (138484368).

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

56463840 is a wasteful number, since it uses less digits than its factorization.

56463840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 56463840 is about 7514.2424767903. The cubic root of 56463840 is about 383.6396358811.

The spelling of 56463840 in words is "fifty-six million, four hundred sixty-three thousand, eight hundred forty".