501389568 has 216 divisors, whose sum is σ = 1581320160. Its totient is φ = 156672000.

The previous prime is 501389563. The next prime is 501389569. The reversal of 501389568 is 865983105.

501389568 is a `hidden beast` number, since 5 + 0 + 1 + 3 + 89 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

It is not an unprimeable number, because it can be changed into a prime (501389563) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1997443 + ... + 1997693.

Almost surely, 2^501389568 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 501389568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (790660080).

501389568 is an abundant number, since it is smaller than the sum of its proper divisors (1079930592).

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

501389568 is a wasteful number, since it uses less digits than its factorization.

501389568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 501389568 is about 22391.7299019080. The cubic root of 501389568 is about 794.4351131329.

The spelling of 501389568 in words is "five hundred one million, three hundred eighty-nine thousand, five hundred sixty-eight".