539569728 has 56 divisors (see below), whose sum is σ = 1586240160. Its totient is φ = 179856000.

The previous prime is 539569727. The next prime is 539569739. The reversal of 539569728 is 827965935.

539569728 is a `hidden beast` number, since 5 + 3 + 9 + 569 + 72 + 8 = 666.

It is a super-2 number, since 2×539569728² = 582270982747987968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (539569727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 154398 + ... + 157853.

Almost surely, 2^539569728 is an apocalyptic number.

It is an amenable number.

539569728 is an abundant number, since it is smaller than the sum of its proper divisors (1046670432).

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

539569728 is a wasteful number, since it uses less digits than its factorization.

539569728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312272 (or 312256 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The square root of 539569728 is about 23228.6402529291. The cubic root of 539569728 is about 814.1089427121.

The spelling of 539569728 in words is "five hundred thirty-nine million, five hundred sixty-nine thousand, seven hundred twenty-eight".