128854656 has 288 divisors, whose sum is σ = 461978400. Its totient is φ = 33675264.

The previous prime is 128854559. The next prime is 128854667. The reversal of 128854656 is 656458821.

It is a tau number, because it is divible by the number of its divisors (288).

Its product of digits (460800) is a multiple of the sum of its prime divisors (60).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4443250 + ... + 4443278.

Almost surely, 2^128854656 is an apocalyptic number.

128854656 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 128854656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230989200).

128854656 is an abundant number, since it is smaller than the sum of its proper divisors (333123744).

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

128854656 is a wasteful number, since it uses less digits than its factorization.

128854656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 60 counting only the distinct ones).

The product of its digits is 460800, while the sum is 45.

The square root of 128854656 is about 11351.4164754889. The cubic root of 128854656 is about 505.0875984367.

The spelling of 128854656 in words is "one hundred twenty-eight million, eight hundred fifty-four thousand, six hundred fifty-six".