549840000 has 320 divisors, whose sum is σ = 1911888000. Its totient is φ = 139776000.

The previous prime is 549839977. The next prime is 549840013. The reversal of 549840000 is 48945.

It is a tau number, because it is divible by the number of its divisors (320).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 549840000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6959961 + ... + 6960039.

It is an arithmetic number, because the mean of its divisors is an integer number (5974650).

Almost surely, 2^549840000 is an apocalyptic number.

549840000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (955944000).

549840000 is an abundant number, since it is smaller than the sum of its proper divisors (1362048000).

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

549840000 is an equidigital number, since it uses as much as digits as its factorization.

549840000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 549840000 is about 23448.6673395313. The cubic root of 549840000 is about 819.2418135599.

Adding to 549840000 its reverse (48945), we get a palindrome (549888945).

The spelling of 549840000 in words is "five hundred forty-nine million, eight hundred forty thousand".