128556448 has 36 divisors (see below), whose sum is σ = 268878582. Its totient is φ = 60492800.

The previous prime is 128556437. The next prime is 128556469. The reversal of 128556448 is 844655821.

It can be written as a sum of positive squares in 3 ways, for example, as 127870864 + 685584 = 11308^2 + 828^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2298 + ... + 16198.

Almost surely, 2^128556448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128556448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134439291).

128556448 is an abundant number, since it is smaller than the sum of its proper divisors (140322134).

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

128556448 is a wasteful number, since it uses less digits than its factorization.

128556448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13945 (or 13920 counting only the distinct ones).

The product of its digits is 307200, while the sum is 43.

The square root of 128556448 is about 11338.2735899254. The cubic root of 128556448 is about 504.6976564900.

The spelling of 128556448 in words is "one hundred twenty-eight million, five hundred fifty-six thousand, four hundred forty-eight".