538020000 has 540 divisors, whose sum is σ = 2260484226. Its totient is φ = 120960000.

The previous prime is 538019981. The next prime is 538020011. The reversal of 538020000 is 20835.

It can be written as a sum of positive squares in 5 ways, for example, as 19820304 + 518199696 = 4452^2 + 22764^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 8819970 + ... + 8820030.

Almost surely, 2^538020000 is an apocalyptic number.

538020000 is a gapful number since it is divisible by the number (50) 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 538020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1130242113).

538020000 is an abundant number, since it is smaller than the sum of its proper divisors (1722464226).

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

538020000 is a wasteful number, since it uses less digits than its factorization.

538020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 538020000 is about 23195.2581360932. The cubic root of 538020000 is about 813.3287795738.

Adding to 538020000 its reverse (20835), we get a palindrome (538040835).

The spelling of 538020000 in words is "five hundred thirty-eight million, twenty thousand".