539820 has 36 divisors (see below), whose sum is σ = 1638000. Its totient is φ = 143904.

The previous prime is 539797. The next prime is 539837. The reversal of 539820 is 28935.

539820 = T₄₁ + T₄₂ + ... + T₁₄₈.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1320 + ... + 1679.

It is an arithmetic number, because the mean of its divisors is an integer number (45500).

2⁵³⁹⁸²⁰ is an apocalyptic number.

It is an amenable number.

539820 is an abundant number, since it is smaller than the sum of its proper divisors (1098180).

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

539820 is a wasteful number, since it uses less digits than its factorization.

539820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3014 (or 3009 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 539820 is about 734.7244381399. The cubic root of 539820 is about 81.4234794336.

The spelling of 539820 in words is "five hundred thirty-nine thousand, eight hundred twenty".