543640320 has 216 divisors, whose sum is σ = 1928489472. Its totient is φ = 141312000.

The previous prime is 543640319. The next prime is 543640333. The reversal of 543640320 is 23046345.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 471745 + ... + 472895.

It is an arithmetic number, because the mean of its divisors is an integer number (8928192).

Almost surely, 2^543640320 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 543640320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964244736).

543640320 is an abundant number, since it is smaller than the sum of its proper divisors (1384849152).

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

543640320 is a wasteful number, since it uses less digits than its factorization.

543640320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1202 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 543640320 is about 23316.0957280588. The cubic root of 543640320 is about 816.1510677632.

Adding to 543640320 its reverse (23046345), we get a palindrome (566686665).

The spelling of 543640320 in words is "five hundred forty-three million, six hundred forty thousand, three hundred twenty".