549020640 has 192 divisors, whose sum is σ = 2014419456. Its totient is φ = 123082752.

The previous prime is 549020617. The next prime is 549020669. The reversal of 549020640 is 46020945.

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

It is a junction number, because it is equal to n+sod(n) for n = 549020598 and 549020607.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176539 + ... + 179621.

It is an arithmetic number, because the mean of its divisors is an integer number (10491768).

Almost surely, 2^549020640 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 549020640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1007209728).

549020640 is an abundant number, since it is smaller than the sum of its proper divisors (1465398816).

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

549020640 is a wasteful number, since it uses less digits than its factorization.

549020640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161 (or 3153 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 549020640 is about 23431.1894704473. The cubic root of 549020640 is about 818.8346722835.

The spelling of 549020640 in words is "five hundred forty-nine million, twenty thousand, six hundred forty".