538835640 has 64 divisors (see below), whose sum is σ = 1847439360. Its totient is φ = 123162240.

The previous prime is 538835599. The next prime is 538835657. The reversal of 538835640 is 46538835.

538835640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 538835592 and 538835601.

It is a congruent number.

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, 319896 + ... + 321575.

It is an arithmetic number, because the mean of its divisors is an integer number (28866240).

Almost surely, 2^538835640 is an apocalyptic number.

It is an amenable number.

538835640 is an abundant number, since it is smaller than the sum of its proper divisors (1308603720).

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

538835640 is a wasteful number, since it uses less digits than its factorization.

538835640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641492 (or 641488 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 538835640 is about 23212.8335194134. The cubic root of 538835640 is about 813.7395750444.

The spelling of 538835640 in words is "five hundred thirty-eight million, eight hundred thirty-five thousand, six hundred forty".