565801728 has 36 divisors (see below), whose sum is σ = 1505859768. Its totient is φ = 188600320.

The previous prime is 565801693. The next prime is 565801729. The reversal of 565801728 is 827108565.

It is a self number, because there is not a number n which added to its sum of digits gives 565801728.

It is not an unprimeable number, because it can be changed into a prime (565801729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367593 + ... + 369128.

It is an arithmetic number, because the mean of its divisors is an integer number (41829438).

Almost surely, 2^565801728 is an apocalyptic number.

It is an amenable number.

565801728 is an abundant number, since it is smaller than the sum of its proper divisors (940058040).

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

565801728 is an equidigital number, since it uses as much as digits as its factorization.

565801728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736740 (or 736726 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 42.

The square root of 565801728 is about 23786.5871448596. The cubic root of 565801728 is about 827.0937832134.

The spelling of 565801728 in words is "five hundred sixty-five million, eight hundred one thousand, seven hundred twenty-eight".