128565548 has 24 divisors (see below), whose sum is σ = 229555200. Its totient is φ = 62990928.

The previous prime is 128565523. The next prime is 128565553. The reversal of 128565548 is 845565821.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 128565499 and 128565508.

It is an unprimeable number.

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, 42461 + ... + 45387.

It is an arithmetic number, because the mean of its divisors is an integer number (9564800).

Almost surely, 2^128565548 is an apocalyptic number.

It is an amenable number.

128565548 is a deficient number, since it is larger than the sum of its proper divisors (100989652).

128565548 is a wasteful number, since it uses less digits than its factorization.

128565548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149 (or 3147 counting only the distinct ones).

The product of its digits is 384000, while the sum is 44.

The square root of 128565548 is about 11338.6748784856. The cubic root of 128565548 is about 504.7095647227.

The spelling of 128565548 in words is "one hundred twenty-eight million, five hundred sixty-five thousand, five hundred forty-eight".