128716 has 12 divisors (see below), whose sum is σ = 257488. Its totient is φ = 55152.

The previous prime is 128693. The next prime is 128717. The reversal of 128716 is 617821.

128716 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (128717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2271 + ... + 2326.

2¹²⁸⁷¹⁶ is an apocalyptic number.

It is an amenable number.

128716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128716 is a wasteful number, since it uses less digits than its factorization.

128716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4608 (or 4606 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 128716 is about 358.7701213869. The cubic root of 128716 is about 50.4906364367.

The spelling of 128716 in words is "one hundred twenty-eight thousand, seven hundred sixteen".