538236384 has 144 divisors (see below), whose sum is σ = 1697020416. Its totient is φ = 148780800.

The previous prime is 538236379. The next prime is 538236403. The reversal of 538236384 is 483632835.

It is a happy number.

It is a super-2 number, since 2×538236384² = 579396810122790912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143979 + ... + 147669.

It is an arithmetic number, because the mean of its divisors is an integer number (11784864).

Almost surely, 2^538236384 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 538236384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (848510208).

538236384 is an abundant number, since it is smaller than the sum of its proper divisors (1158784032).

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

538236384 is a wasteful number, since it uses less digits than its factorization.

538236384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3749 (or 3734 counting only the distinct ones).

The product of its digits is 414720, while the sum is 42.

The square root of 538236384 is about 23199.9220688346. The cubic root of 538236384 is about 813.4378013860.

The spelling of 538236384 in words is "five hundred thirty-eight million, two hundred thirty-six thousand, three hundred eighty-four".