128082881 has 8 divisors (see below), whose sum is σ = 129635328. Its totient is φ = 126540000.

The previous prime is 128082827. The next prime is 128082907. The reversal of 128082881 is 188280821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128082881 - 2⁶ = 128082817 is a prime.

It is a super-2 number, since 2×128082881² = 32810448810520322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128082181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26621 + ... + 31061.

It is an arithmetic number, because the mean of its divisors is an integer number (16204416).

Almost surely, 2^128082881 is an apocalyptic number.

It is an amenable number.

128082881 is a deficient number, since it is larger than the sum of its proper divisors (1552447).

128082881 is a wasteful number, since it uses less digits than its factorization.

128082881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4783.

The product of its (nonzero) digits is 16384, while the sum is 38.

The square root of 128082881 is about 11317.3707635652. The cubic root of 128082881 is about 504.0771709853.

The spelling of 128082881 in words is "one hundred twenty-eight million, eighty-two thousand, eight hundred eighty-one".