538088640 has 112 divisors (see below), whose sum is σ = 1715158368. Its totient is φ = 142925824.

The previous prime is 538088597. The next prime is 538088687. The reversal of 538088640 is 46880835.

It is a junction number, because it is equal to n+sod(n) for n = 538088592 and 538088601.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280324 + ... + 282236.

It is an arithmetic number, because the mean of its divisors is an integer number (15313914).

Almost surely, 2^538088640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538088640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (857579184).

538088640 is an abundant number, since it is smaller than the sum of its proper divisors (1177069728).

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

538088640 is a wasteful number, since it uses less digits than its factorization.

538088640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226 (or 2216 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 538088640 is about 23196.7377016683. The cubic root of 538088640 is about 813.3633659668.

The spelling of 538088640 in words is "five hundred thirty-eight million, eighty-eight thousand, six hundred forty".