128840083 has 16 divisors (see below), whose sum is σ = 139708800. Its totient is φ = 118419840.

The previous prime is 128840077. The next prime is 128840087. The reversal of 128840083 is 380048821.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128840083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128840087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145803 + ... + 146683.

It is an arithmetic number, because the mean of its divisors is an integer number (8731800).

Almost surely, 2^128840083 is an apocalyptic number.

128840083 is a deficient number, since it is larger than the sum of its proper divisors (10868717).

128840083 is a wasteful number, since it uses less digits than its factorization.

128840083 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122.

The product of its (nonzero) digits is 12288, while the sum is 34.

The square root of 128840083 is about 11350.7745550689. The cubic root of 128840083 is about 505.0685565195.

The spelling of 128840083 in words is "one hundred twenty-eight million, eight hundred forty thousand, eighty-three".