539321328 has 400 divisors, whose sum is σ = 2041744320. Its totient is φ = 133373952.

The previous prime is 539321309. The next prime is 539321347. The reversal of 539321328 is 823123935.

539321328 is a `hidden beast` number, since 5 + 3 + 9 + 321 + 328 = 666.

It is an interprime number because it is at equal distance from previous prime (539321309) and next prime (539321347).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 539321292 and 539321301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2004778 + ... + 2005046.

Almost surely, 2^539321328 is an apocalyptic number.

539321328 is the 14688-th heptagonal number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 539321328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1020872160).

539321328 is an abundant number, since it is smaller than the sum of its proper divisors (1502422992).

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

539321328 is a wasteful number, since it uses less digits than its factorization.

539321328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 311 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 539321328 is about 23223.2927897833. The cubic root of 539321328 is about 813.9839939543.

The spelling of 539321328 in words is "five hundred thirty-nine million, three hundred twenty-one thousand, three hundred twenty-eight".