539281920 has 320 divisors, whose sum is σ = 1866737664. Its totient is φ = 132464640.

The previous prime is 539281913. The next prime is 539281931. The reversal of 539281920 is 29182935.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7595485 + ... + 7595555.

Almost surely, 2^539281920 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 539281920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933368832).

539281920 is an abundant number, since it is smaller than the sum of its proper divisors (1327455744).

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

539281920 is a wasteful number, since it uses less digits than its factorization.

539281920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 147 counting only the distinct ones).

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

The square root of 539281920 is about 23222.4443157907. Note that the first 3 decimals coincide. The cubic root of 539281920 is about 813.9641676399.

The spelling of 539281920 in words is "five hundred thirty-nine million, two hundred eighty-one thousand, nine hundred twenty".