648020048 has 20 divisors (see below), whose sum is σ = 1352119188. Its totient is φ = 299086080.

The previous prime is 648020027. The next prime is 648020057. The reversal of 648020048 is 840020846.

It can be written as a sum of positive squares in 2 ways, for example, as 443186704 + 204833344 = 21052^2 + 14312^2 .

It is a junction number, because it is equal to n+sod(n) for n = 648019996 and 648020023.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1557533 + ... + 1557948.

Almost surely, 2^648020048 is an apocalyptic number.

It is an amenable number.

648020048 is an abundant number, since it is smaller than the sum of its proper divisors (704099140).

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

648020048 is a wasteful number, since it uses less digits than its factorization.

648020048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115502 (or 3115496 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 648020048 is about 25456.2378995797. The cubic root of 648020048 is about 865.3586662342.

The spelling of 648020048 in words is "six hundred forty-eight million, twenty thousand, forty-eight".