56171928 has 32 divisors (see below), whose sum is σ = 140762160. Its totient is φ = 18679680.

The previous prime is 56171917. The next prime is 56171933. The reversal of 56171928 is 82917165.

56171928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 an unprimeable number.

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, 8526 + ... + 13602.

Almost surely, 2^56171928 is an apocalyptic number.

It is an amenable number.

56171928 is an abundant number, since it is smaller than the sum of its proper divisors (84590232).

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

56171928 is a wasteful number, since it uses less digits than its factorization.

56171928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5547 (or 5543 counting only the distinct ones).

The product of its digits is 30240, while the sum is 39.

The square root of 56171928 is about 7494.7933927494. The cubic root of 56171928 is about 382.9773680178.

The spelling of 56171928 in words is "fifty-six million, one hundred seventy-one thousand, nine hundred twenty-eight".