648248828 has 12 divisors (see below), whose sum is σ = 1201167072. Its totient is φ = 305058240.

The previous prime is 648248807. The next prime is 648248831. The reversal of 648248828 is 828842846.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4766468 + ... + 4766603.

It is an arithmetic number, because the mean of its divisors is an integer number (100097256).

Almost surely, 2^648248828 is an apocalyptic number.

648248828 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

648248828 is a deficient number, since it is larger than the sum of its proper divisors (552918244).

648248828 is a wasteful number, since it uses less digits than its factorization.

648248828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9533092 (or 9533090 counting only the distinct ones).

The product of its digits is 1572864, while the sum is 50.

The square root of 648248828 is about 25460.7310971229. The cubic root of 648248828 is about 865.4604909965.

The spelling of 648248828 in words is "six hundred forty-eight million, two hundred forty-eight thousand, eight hundred twenty-eight".