56128806 has 12 divisors (see below), whose sum is σ = 121612452. Its totient is φ = 18709596.

The previous prime is 56128801. The next prime is 56128819. The reversal of 56128806 is 60882165.

It is a happy number.

56128806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56128801) 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 5 ways as a sum of consecutive naturals, for example, 1559116 + ... + 1559151.

It is an arithmetic number, because the mean of its divisors is an integer number (10134371).

Almost surely, 2^56128806 is an apocalyptic number.

56128806 is an abundant number, since it is smaller than the sum of its proper divisors (65483646).

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

56128806 is a wasteful number, since it uses less digits than its factorization.

56128806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3118275 (or 3118272 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 56128806 is about 7491.9160433096. The cubic root of 56128806 is about 382.8793417233.

The spelling of 56128806 in words is "fifty-six million, one hundred twenty-eight thousand, eight hundred six".