549032640 has 448 divisors, whose sum is σ = 2043135360. Its totient is φ = 123863040.

The previous prime is 549032621. The next prime is 549032647. The reversal of 549032640 is 46230945.

It is not an unprimeable number, because it can be changed into a prime (549032647) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 13391020 + ... + 13391060.

It is an arithmetic number, because the mean of its divisors is an integer number (4560570).

Almost surely, 2^549032640 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 549032640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1021567680).

549032640 is an abundant number, since it is smaller than the sum of its proper divisors (1494102720).

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

549032640 is a wasteful number, since it uses less digits than its factorization.

549032640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 549032640 is about 23431.4455379944. The cubic root of 549032640 is about 818.8406380243.

The spelling of 549032640 in words is "five hundred forty-nine million, thirty-two thousand, six hundred forty".