128285888 has 28 divisors (see below), whose sum is σ = 257799840. Its totient is φ = 63328512.

The previous prime is 128285869. The next prime is 128285903. The reversal of 128285888 is 888582821.

It is a super-3 number, since 3×128285888³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7631 + ... + 17742.

Almost surely, 2^128285888 is an apocalyptic number.

It is an amenable number.

128285888 is an abundant number, since it is smaller than the sum of its proper divisors (129513952).

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

128285888 is an equidigital number, since it uses as much as digits as its factorization.

128285888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25464 (or 25454 counting only the distinct ones).

The product of its digits is 655360, while the sum is 50.

The square root of 128285888 is about 11326.3360359827. The cubic root of 128285888 is about 504.3433454530.

The spelling of 128285888 in words is "one hundred twenty-eight million, two hundred eighty-five thousand, eight hundred eighty-eight".