538777020 has 24 divisors (see below), whose sum is σ = 1508575824. Its totient is φ = 143673856.

The previous prime is 538776989. The next prime is 538777049. The reversal of 538777020 is 20777835.

It is a self number, because there is not a number n which added to its sum of digits gives 538777020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4489749 + ... + 4489868.

It is an arithmetic number, because the mean of its divisors is an integer number (62857326).

Almost surely, 2^538777020 is an apocalyptic number.

It is an amenable number.

538777020 is an abundant number, since it is smaller than the sum of its proper divisors (969798804).

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

538777020 is a wasteful number, since it uses less digits than its factorization.

538777020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8979629 (or 8979627 counting only the distinct ones).

The product of its (nonzero) digits is 82320, while the sum is 39.

The square root of 538777020 is about 23211.5708214675. The cubic root of 538777020 is about 813.7100650292.

The spelling of 538777020 in words is "five hundred thirty-eight million, seven hundred seventy-seven thousand, twenty".