56836728 has 144 divisors (see below), whose sum is σ = 173857320. Its totient is φ = 17387136.

The previous prime is 56836727. The next prime is 56836751. The reversal of 56836728 is 82763865.

56836728 is a `hidden beast` number, since 568 + 3 + 67 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56836727) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 328450 + ... + 328622.

Almost surely, 2^56836728 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 56836728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86928660).

56836728 is an abundant number, since it is smaller than the sum of its proper divisors (117020592).

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

56836728 is a wasteful number, since it uses less digits than its factorization.

56836728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 191 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 56836728 is about 7539.0137285987. The cubic root of 56836728 is about 384.4823041285.

The spelling of 56836728 in words is "fifty-six million, eight hundred thirty-six thousand, seven hundred twenty-eight".