56128716 has 108 divisors (see below), whose sum is σ = 168805728. Its totient is φ = 15672384.

The previous prime is 56128703. The next prime is 56128727. The reversal of 56128716 is 61782165.

56128716 is a `hidden beast` number, since 561 + 2 + 87 + 16 = 666.

56128716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a nialpdrome in base 14.

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 35 ways as a sum of consecutive naturals, for example, 82570 + ... + 83246.

It is an arithmetic number, because the mean of its divisors is an integer number (1563016).

Almost surely, 2^56128716 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 56128716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84402864).

56128716 is an abundant number, since it is smaller than the sum of its proper divisors (112677012).

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

56128716 is a wasteful number, since it uses less digits than its factorization.

56128716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 736 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 56128716 is about 7491.9100368331. The cubic root of 56128716 is about 382.8791370799.

The spelling of 56128716 in words is "fifty-six million, one hundred twenty-eight thousand, seven hundred sixteen".