128548648 has 16 divisors (see below), whose sum is σ = 249340500. Its totient is φ = 62057856.

The previous prime is 128548643. The next prime is 128548649. The reversal of 128548648 is 846845821.

It can be written as a sum of positive squares in 2 ways, for example, as 126292644 + 2256004 = 11238^2 + 1502^2 .

It is a junction number, because it is equal to n+sod(n) for n = 128548598 and 128548607.

It is not an unprimeable number, because it can be changed into a prime (128548643) 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, 276813 + ... + 277276.

Almost surely, 2^128548648 is an apocalyptic number.

It is an amenable number.

128548648 is a deficient number, since it is larger than the sum of its proper divisors (120791852).

128548648 is a wasteful number, since it uses less digits than its factorization.

128548648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554124 (or 554120 counting only the distinct ones).

The product of its digits is 491520, while the sum is 46.

The square root of 128548648 is about 11337.9296169980. The cubic root of 128548648 is about 504.6874489861.

The spelling of 128548648 in words is "one hundred twenty-eight million, five hundred forty-eight thousand, six hundred forty-eight".