128063856 has 40 divisors (see below), whose sum is σ = 350294544. Its totient is φ = 40176640.

The previous prime is 128063851. The next prime is 128063893. The reversal of 128063856 is 658360821.

It is a happy number.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128063851) 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, 77655 + ... + 79286.

Almost surely, 2^128063856 is an apocalyptic number.

128063856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128063856 is an abundant number, since it is smaller than the sum of its proper divisors (222230688).

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

128063856 is a wasteful number, since it uses less digits than its factorization.

128063856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156969 (or 156963 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 128063856 is about 11316.5302102721. The cubic root of 128063856 is about 504.0522117741.

The spelling of 128063856 in words is "one hundred twenty-eight million, sixty-three thousand, eight hundred fifty-six".