571728 has 40 divisors (see below), whose sum is σ = 1516768. Its totient is φ = 185472.

The previous prime is 571721. The next prime is 571741. The reversal of 571728 is 827175.

It is a happy number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 571695 and 571704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (571721) by changing a digit.

571728 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1926 + ... + 2202.

2⁵⁷¹⁷²⁸ 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 571728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (758384).

571728 is an abundant number, since it is smaller than the sum of its proper divisors (945040).

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

571728 is a wasteful number, since it uses less digits than its factorization.

571728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 325 counting only the distinct ones).

The product of its digits is 3920, while the sum is 30.

The square root of 571728 is about 756.1269734641. The cubic root of 571728 is about 82.9971451091.

The spelling of 571728 in words is "five hundred seventy-one thousand, seven hundred twenty-eight".