648500428 has 12 divisors (see below), whose sum is σ = 1201633272. Its totient is φ = 305176640.

The previous prime is 648500423. The next prime is 648500429. The reversal of 648500428 is 824005846.

648500428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×648500428³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (648500423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4768318 + ... + 4768453.

It is an arithmetic number, because the mean of its divisors is an integer number (100136106).

Almost surely, 2^648500428 is an apocalyptic number.

648500428 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

648500428 is a deficient number, since it is larger than the sum of its proper divisors (553132844).

648500428 is a wasteful number, since it uses less digits than its factorization.

648500428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9536792 (or 9536790 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 648500428 is about 25465.6715599648. The cubic root of 648500428 is about 865.5724447633.

The spelling of 648500428 in words is "six hundred forty-eight million, five hundred thousand, four hundred twenty-eight".