128845056 has 72 divisors (see below), whose sum is σ = 345877504. Its totient is φ = 42577920.

The previous prime is 128845051. The next prime is 128845081. The reversal of 128845056 is 650548821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128845051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96876 + ... + 98196.

Almost surely, 2^128845056 is an apocalyptic number.

128845056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128845056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172938752).

128845056 is an abundant number, since it is smaller than the sum of its proper divisors (217032448).

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

128845056 is a wasteful number, since it uses less digits than its factorization.

128845056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467 (or 1453 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 128845056 is about 11350.9936128957. The cubic root of 128845056 is about 505.0750546878.

The spelling of 128845056 in words is "one hundred twenty-eight million, eight hundred forty-five thousand, fifty-six".