128053656 has 128 divisors (see below), whose sum is σ = 385862400. Its totient is φ = 39191040.

The previous prime is 128053649. The next prime is 128053697. The reversal of 128053656 is 656350821.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 128053656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157491 + ... + 158301.

It is an arithmetic number, because the mean of its divisors is an integer number (3014550).

Almost surely, 2^128053656 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 128053656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192931200).

128053656 is an abundant number, since it is smaller than the sum of its proper divisors (257808744).

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

128053656 is a wasteful number, since it uses less digits than its factorization.

128053656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 876 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 128053656 is about 11316.0795331245. The cubic root of 128053656 is about 504.0388292080.

It can be divided in two parts, 12805 and 3656, that added together give a palindrome (16461).

The spelling of 128053656 in words is "one hundred twenty-eight million, fifty-three thousand, six hundred fifty-six".