123256648 has 32 divisors (see below), whose sum is σ = 243936000. Its totient is φ = 58224960.

The previous prime is 123256597. The next prime is 123256691. The reversal of 123256648 is 846652321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69193 + ... + 70951.

It is an arithmetic number, because the mean of its divisors is an integer number (7623000).

Almost surely, 2^123256648 is an apocalyptic number.

It is an amenable number.

123256648 is a deficient number, since it is larger than the sum of its proper divisors (120679352).

123256648 is a wasteful number, since it uses less digits than its factorization.

123256648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245 (or 2241 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 123256648 is about 11102.1010624116. The cubic root of 123256648 is about 497.6646398349.

It can be divided in two parts, 123256 and 648, that added together give a square (123904 = 352²).

The spelling of 123256648 in words is "one hundred twenty-three million, two hundred fifty-six thousand, six hundred forty-eight".