128516073 has 24 divisors (see below), whose sum is σ = 211060512. Its totient is φ = 69116544.

The previous prime is 128516071. The next prime is 128516077. The reversal of 128516073 is 370615821.

It is not a de Polignac number, because 128516073 - 2¹ = 128516071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128516071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23215 + ... + 28212.

It is an arithmetic number, because the mean of its divisors is an integer number (8794188).

Almost surely, 2^128516073 is an apocalyptic number.

It is an amenable number.

128516073 is a deficient number, since it is larger than the sum of its proper divisors (82544439).

128516073 is a wasteful number, since it uses less digits than its factorization.

128516073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51461 (or 51454 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 128516073 is about 11336.4929762251. The cubic root of 128516073 is about 504.6448151070.

The spelling of 128516073 in words is "one hundred twenty-eight million, five hundred sixteen thousand, seventy-three".