539072640 has 192 divisors, whose sum is σ = 1922169600. Its totient is φ = 139069440.

The previous prime is 539072623. The next prime is 539072707. The reversal of 539072640 is 46270935.

539072640 is a `hidden beast` number, since 5 + 3 + 9 + 0 + 7 + 2 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×539072640² = 581198622393139200, which contains 22 as substring.

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 = 539072595 and 539072604.

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 23 ways as a sum of consecutive naturals, for example, 177051 + ... + 180069.

It is an arithmetic number, because the mean of its divisors is an integer number (10011300).

Almost surely, 2^539072640 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 539072640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (961084800).

539072640 is an abundant number, since it is smaller than the sum of its proper divisors (1383096960).

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

539072640 is a wasteful number, since it uses less digits than its factorization.

539072640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3075 (or 3060 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 539072640 is about 23217.9378929310. The cubic root of 539072640 is about 813.8588618898.

The spelling of 539072640 in words is "five hundred thirty-nine million, seventy-two thousand, six hundred forty".