538505680 has 40 divisors (see below), whose sum is σ = 1252991232. Its totient is φ = 215236224.

The previous prime is 538505663. The next prime is 538505687. The reversal of 538505680 is 86505835.

538505680 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538505687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202117 + ... + 204763.

Almost surely, 2^538505680 is an apocalyptic number.

It is an amenable number.

538505680 is an abundant number, since it is smaller than the sum of its proper divisors (714485552).

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

538505680 is a wasteful number, since it uses less digits than its factorization.

538505680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5203 (or 5197 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 40.

The square root of 538505680 is about 23205.7251556593. The cubic root of 538505680 is about 813.5734413077.

The spelling of 538505680 in words is "five hundred thirty-eight million, five hundred five thousand, six hundred eighty".