538248816 has 120 divisors (see below), whose sum is σ = 1781002080. Its totient is φ = 148474368.

The previous prime is 538248791. The next prime is 538248817. The reversal of 538248816 is 618842835.

538248816 is a `hidden beast` number, since 538 + 24 + 88 + 16 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538248817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20026 + ... + 38438.

It is an arithmetic number, because the mean of its divisors is an integer number (14841684).

Almost surely, 2^538248816 is an apocalyptic number.

538248816 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538248816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (890501040).

538248816 is an abundant number, since it is smaller than the sum of its proper divisors (1242753264).

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

538248816 is a wasteful number, since it uses less digits than its factorization.

538248816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18463 (or 18454 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 538248816 is about 23200.1899992220. The cubic root of 538248816 is about 813.4440641738. Note that the first 3 decimals are identical.

The spelling of 538248816 in words is "five hundred thirty-eight million, two hundred forty-eight thousand, eight hundred sixteen".