648382928 has 40 divisors (see below), whose sum is σ = 1309603680. Its totient is φ = 310593920.

The previous prime is 648382927. The next prime is 648382951. The reversal of 648382928 is 829283846.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (648382927) 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 7 ways as a sum of consecutive naturals, for example, 55451 + ... + 66117.

It is an arithmetic number, because the mean of its divisors is an integer number (32740092).

Almost surely, 2^648382928 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 648382928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (654801840).

648382928 is an abundant number, since it is smaller than the sum of its proper divisors (661220752).

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

648382928 is a wasteful number, since it uses less digits than its factorization.

648382928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10835 (or 10829 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 50.

The square root of 648382928 is about 25463.3644281348. The cubic root of 648382928 is about 865.5201647128.

The spelling of 648382928 in words is "six hundred forty-eight million, three hundred eighty-two thousand, nine hundred twenty-eight".