56128306 has 8 divisors (see below), whose sum is σ = 90668844. Its totient is φ = 25905360.

The previous prime is 56128301. The next prime is 56128307. The reversal of 56128306 is 60382165.

56128306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 56115081 + 13225 = 7491^2 + 115^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (56128301) 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, 1079365 + ... + 1079416.

Almost surely, 2^56128306 is an apocalyptic number.

56128306 is a deficient number, since it is larger than the sum of its proper divisors (34540538).

56128306 is a wasteful number, since it uses less digits than its factorization.

56128306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2158796.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 56128306 is about 7491.8826739345. The cubic root of 56128306 is about 382.8782048130.

The spelling of 56128306 in words is "fifty-six million, one hundred twenty-eight thousand, three hundred six".