538291520 has 112 divisors (see below), whose sum is σ = 1397934720. Its totient is φ = 196233216.

The previous prime is 538291499. The next prime is 538291529. The reversal of 538291520 is 25192835.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538291529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344501 + ... + 346059.

It is an arithmetic number, because the mean of its divisors is an integer number (12481560).

Almost surely, 2^538291520 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 538291520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (698967360).

538291520 is an abundant number, since it is smaller than the sum of its proper divisors (859643200).

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

538291520 is a wasteful number, since it uses less digits than its factorization.

538291520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 538291520 is about 23201.1103182585. The cubic root of 538291520 is about 813.4655761559.

The spelling of 538291520 in words is "five hundred thirty-eight million, two hundred ninety-one thousand, five hundred twenty".