531864384 has 56 divisors (see below), whose sum is σ = 1421209248. Its totient is φ = 175526400.

The previous prime is 531864383. The next prime is 531864407. The reversal of 531864384 is 483468135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531864383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5679 + ... + 33105.

Almost surely, 2^531864384 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 531864384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710604624).

531864384 is an abundant number, since it is smaller than the sum of its proper divisors (889344864).

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

531864384 is a wasteful number, since it uses less digits than its factorization.

531864384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27543 (or 27533 counting only the distinct ones).

The product of its digits is 276480, while the sum is 42.

The square root of 531864384 is about 23062.1851523224. The cubic root of 531864384 is about 810.2150442600.

The spelling of 531864384 in words is "five hundred thirty-one million, eight hundred sixty-four thousand, three hundred eighty-four".