128912883 has 16 divisors (see below), whose sum is σ = 189235200. Its totient is φ = 77410080.

The previous prime is 128912881. The next prime is 128912893. The reversal of 128912883 is 388219821.

It is not a de Polignac number, because 128912883 - 2¹ = 128912881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128912881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14323 + ... + 21516.

It is an arithmetic number, because the mean of its divisors is an integer number (11827200).

Almost surely, 2^128912883 is an apocalyptic number.

128912883 is a deficient number, since it is larger than the sum of its proper divisors (60322317).

128912883 is a wasteful number, since it uses less digits than its factorization.

128912883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35962.

The product of its digits is 55296, while the sum is 42.

The square root of 128912883 is about 11353.9809318142. The cubic root of 128912883 is about 505.1636668478.

It can be divided in two parts, 128912 and 883, that added together give a triangular number (129795 = T₅₀₉).

The spelling of 128912883 in words is "one hundred twenty-eight million, nine hundred twelve thousand, eight hundred eighty-three".