56633928 has 48 divisors (see below), whose sum is σ = 153324720. Its totient is φ = 17424576.

The previous prime is 56633921. The next prime is 56633947. The reversal of 56633928 is 82933665.

It is a self number, because there is not a number n which added to its sum of digits gives 56633928.

It is not an unprimeable number, because it can be changed into a prime (56633921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2926 + ... + 11037.

It is an arithmetic number, because the mean of its divisors is an integer number (3194265).

Almost surely, 2^56633928 is an apocalyptic number.

It is an amenable number.

56633928 is an abundant number, since it is smaller than the sum of its proper divisors (96690792).

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

56633928 is a wasteful number, since it uses less digits than its factorization.

56633928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13998 (or 13981 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The square root of 56633928 is about 7525.5516741299. The cubic root of 56633928 is about 384.0244667570.

It can be divided in two parts, 5663 and 3928, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 56633928 in words is "fifty-six million, six hundred thirty-three thousand, nine hundred twenty-eight".