538592640 has 256 divisors, whose sum is σ = 1883736000. Its totient is φ = 130285568.

The previous prime is 538592629. The next prime is 538592641. The reversal of 538592640 is 46295835.

It is a junction number, because it is equal to n+sod(n) for n = 538592592 and 538592601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538592641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 946276 + ... + 946844.

Almost surely, 2^538592640 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 538592640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (941868000).

538592640 is an abundant number, since it is smaller than the sum of its proper divisors (1345143360).

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

538592640 is a wasteful number, since it uses less digits than its factorization.

538592640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 42.

The square root of 538592640 is about 23207.5987555800. The cubic root of 538592640 is about 813.6172319560.

The spelling of 538592640 in words is "five hundred thirty-eight million, five hundred ninety-two thousand, six hundred forty".