568129728 has 56 divisors (see below), whose sum is σ = 1507396528. Its totient is φ = 188845056.

The previous prime is 568129721. The next prime is 568129733. The reversal of 568129728 is 827921865.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (568129721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67650 + ... + 75582.

Almost surely, 2^568129728 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 568129728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (753698264).

568129728 is an abundant number, since it is smaller than the sum of its proper divisors (939266800).

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

568129728 is a wasteful number, since it uses less digits than its factorization.

568129728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8321 (or 8311 counting only the distinct ones).

The product of its digits is 483840, while the sum is 48.

The square root of 568129728 is about 23835.4720532235. The cubic root of 568129728 is about 828.2265943815.

The spelling of 568129728 in words is "five hundred sixty-eight million, one hundred twenty-nine thousand, seven hundred twenty-eight".