56128704 has 56 divisors (see below), whose sum is σ = 152540208. Its totient is φ = 18201600.

The previous prime is 56128703. The next prime is 56128727. The reversal of 56128704 is 40782165.

It is not an unprimeable number, because it can be changed into a prime (56128703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3154 + ... + 11054.

Almost surely, 2^56128704 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 56128704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76270104).

56128704 is an abundant number, since it is smaller than the sum of its proper divisors (96411504).

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

56128704 is a wasteful number, since it uses less digits than its factorization.

56128704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7953 (or 7943 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 56128704 is about 7491.9092359692. The cubic root of 56128704 is about 382.8791097941.

The spelling of 56128704 in words is "fifty-six million, one hundred twenty-eight thousand, seven hundred four".