56128768 has 36 divisors (see below), whose sum is σ = 112638708. Its totient is φ = 27914240.

The previous prime is 56128757. The next prime is 56128777. The reversal of 56128768 is 86782165.

It can be written as a sum of positive squares in 2 ways, for example, as 22581504 + 33547264 = 4752^2 + 5792^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59178 + ... + 60118.

It is an arithmetic number, because the mean of its divisors is an integer number (3128853).

Almost surely, 2^56128768 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 56128768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56319354).

56128768 is an abundant number, since it is smaller than the sum of its proper divisors (56509940).

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

56128768 is an equidigital number, since it uses as much as digits as its factorization.

56128768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 1176 counting only the distinct ones).

The product of its digits is 161280, while the sum is 43.

The square root of 56128768 is about 7491.9135072423. The cubic root of 56128768 is about 382.8792553183.

The spelling of 56128768 in words is "fifty-six million, one hundred twenty-eight thousand, seven hundred sixty-eight".