538197240 has 256 divisors, whose sum is σ = 1953331200. Its totient is φ = 115974144.

The previous prime is 538197229. The next prime is 538197259. The reversal of 538197240 is 42791835.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1719324 + ... + 1719636.

It is an arithmetic number, because the mean of its divisors is an integer number (7630200).

Almost surely, 2^538197240 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 538197240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (976665600).

538197240 is an abundant number, since it is smaller than the sum of its proper divisors (1415133960).

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

538197240 is a wasteful number, since it uses less digits than its factorization.

538197240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 538197240 is about 23199.0784299722. The cubic root of 538197240 is about 813.4180814375.

The spelling of 538197240 in words is "five hundred thirty-eight million, one hundred ninety-seven thousand, two hundred forty".