56812728 has 32 divisors (see below), whose sum is σ = 162322560. Its totient is φ = 16232160.

The previous prime is 56812727. The next prime is 56812729. The reversal of 56812728 is 82721865.

56812728 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 (56812727) and next prime (56812729).

It is a Smith number, since the sum of its digits (39) 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 (56812727) 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 7 ways as a sum of consecutive naturals, for example, 168918 + ... + 169253.

It is an arithmetic number, because the mean of its divisors is an integer number (5072580).

Almost surely, 2^56812728 is an apocalyptic number.

It is an amenable number.

56812728 is an abundant number, since it is smaller than the sum of its proper divisors (105509832).

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

56812728 is a wasteful number, since it uses less digits than its factorization.

56812728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338187 (or 338183 counting only the distinct ones).

The product of its digits is 53760, while the sum is 39.

The square root of 56812728 is about 7537.4218403908. The cubic root of 56812728 is about 384.4281790657.

The spelling of 56812728 in words is "fifty-six million, eight hundred twelve thousand, seven hundred twenty-eight".