539209128 has 64 divisors (see below), whose sum is σ = 1445472000. Its totient is φ = 167012352.

The previous prime is 539209123. The next prime is 539209141. The reversal of 539209128 is 821902935.

It is not an unprimeable number, because it can be changed into a prime (539209123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23868 + ... + 40596.

It is an arithmetic number, because the mean of its divisors is an integer number (22585500).

Almost surely, 2^539209128 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 539209128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (722736000).

539209128 is an abundant number, since it is smaller than the sum of its proper divisors (906262872).

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

539209128 is a wasteful number, since it uses less digits than its factorization.

539209128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16834 (or 16830 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 539209128 is about 23220.8769860227. The cubic root of 539209128 is about 813.9275431685.

The spelling of 539209128 in words is "five hundred thirty-nine million, two hundred nine thousand, one hundred twenty-eight".