539780 has 24 divisors (see below), whose sum is σ = 1147608. Its totient is φ = 213248.

The previous prime is 539761. The next prime is 539783. The reversal of 539780 is 87935.

It can be written as a sum of positive squares in 4 ways, for example, as 217156 + 322624 = 466^2 + 568^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (539783) by changing a digit.

539780 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 7 ways as a sum of consecutive naturals, for example, 2642 + ... + 2838.

It is an arithmetic number, because the mean of its divisors is an integer number (47817).

2⁵³⁹⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

539780 is an abundant number, since it is smaller than the sum of its proper divisors (607828).

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

539780 is a wasteful number, since it uses less digits than its factorization.

539780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 341 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 539780 is about 734.6972165457. The cubic root of 539780 is about 81.4214682573.

The spelling of 539780 in words is "five hundred thirty-nine thousand, seven hundred eighty".