56728528 has 40 divisors (see below), whose sum is σ = 116421120. Its totient is φ = 26703360.

The previous prime is 56728523. The next prime is 56728531. The reversal of 56728528 is 82582765.

56728528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56728523) 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, 57576 + ... + 58552.

It is an arithmetic number, because the mean of its divisors is an integer number (2910528).

Almost surely, 2^56728528 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 56728528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58210560).

56728528 is an abundant number, since it is smaller than the sum of its proper divisors (59692592).

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

56728528 is a wasteful number, since it uses less digits than its factorization.

56728528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195 (or 1189 counting only the distinct ones).

The product of its digits is 268800, while the sum is 43.

The square root of 56728528 is about 7531.8343051344. The cubic root of 56728528 is about 384.2381696676.

The spelling of 56728528 in words is "fifty-six million, seven hundred twenty-eight thousand, five hundred twenty-eight".