538443776 has 80 divisors (see below), whose sum is σ = 1174404000. Its totient is φ = 245366784.

The previous prime is 538443761. The next prime is 538443779. The reversal of 538443776 is 677344835.

It is a self number, because there is not a number n which added to its sum of digits gives 538443776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538443779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6815705 + ... + 6815783.

It is an arithmetic number, because the mean of its divisors is an integer number (14680050).

Almost surely, 2^538443776 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 538443776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (587202000).

538443776 is an abundant number, since it is smaller than the sum of its proper divisors (635960224).

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

538443776 is an frugal number, since it uses more digits than its factorization.

538443776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130 (or 94 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 47.

The square root of 538443776 is about 23204.3913085433. The cubic root of 538443776 is about 813.5422652946.

The spelling of 538443776 in words is "five hundred thirty-eight million, four hundred forty-three thousand, seven hundred seventy-six".