538376640 has 224 divisors, whose sum is σ = 1834652160. Its totient is φ = 133410816.

The previous prime is 538376627. The next prime is 538376651. The reversal of 538376640 is 46673835.

It is a junction number, because it is equal to n+sod(n) for n = 538376592 and 538376601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 816631 + ... + 817289.

Almost surely, 2^538376640 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 538376640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (917326080).

538376640 is an abundant number, since it is smaller than the sum of its proper divisors (1296275520).

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

538376640 is a wasteful number, since it uses less digits than its factorization.

538376640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739 (or 729 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 42.

The square root of 538376640 is about 23202.9446407132. The cubic root of 538376640 is about 813.5084516474.

The spelling of 538376640 in words is "five hundred thirty-eight million, three hundred seventy-six thousand, six hundred forty".