128520048 has 40 divisors (see below), whose sum is σ = 342724096. Its totient is φ = 41457600.

The previous prime is 128520023. The next prime is 128520061. The reversal of 128520048 is 840025821.

It is a junction number, because it is equal to n+sod(n) for n = 128519997 and 128520024.

It is a congruent number.

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, 41698 + ... + 44673.

Almost surely, 2^128520048 is an apocalyptic number.

It is an amenable number.

128520048 is an abundant number, since it is smaller than the sum of its proper divisors (214204048).

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

128520048 is a wasteful number, since it uses less digits than its factorization.

128520048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86413 (or 86407 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 128520048 is about 11336.6682936390. The cubic root of 128520048 is about 504.6500179386.

Adding to 128520048 its reverse (840025821), we get a palindrome (968545869).

The spelling of 128520048 in words is "one hundred twenty-eight million, five hundred twenty thousand, forty-eight".