548644428 has 36 divisors (see below), whose sum is σ = 1438218600. Its totient is φ = 182881152.

The previous prime is 548644427. The next prime is 548644429. The reversal of 548644428 is 824446845.

548644428 is a `hidden beast` number, since 548 + 64 + 4 + 42 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (548644427) and next prime (548644429).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (548644427) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 281253 + ... + 283196.

Almost surely, 2^548644428 is an apocalyptic number.

It is an amenable number.

548644428 is an abundant number, since it is smaller than the sum of its proper divisors (889574172).

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

548644428 is a wasteful number, since it uses less digits than its factorization.

548644428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564468 (or 564454 counting only the distinct ones).

The product of its digits is 983040, while the sum is 45.

The square root of 548644428 is about 23423.1600771544. The cubic root of 548644428 is about 818.6475962441.

The spelling of 548644428 in words is "five hundred forty-eight million, six hundred forty-four thousand, four hundred twenty-eight".