128543716 has 24 divisors (see below), whose sum is σ = 257463360. Its totient is φ = 55009632.

The previous prime is 128543707. The next prime is 128543717. The reversal of 128543716 is 617345821.

It is not an unprimeable number, because it can be changed into a prime (128543717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18675 + ... + 24613.

It is an arithmetic number, because the mean of its divisors is an integer number (10727640).

Almost surely, 2^128543716 is an apocalyptic number.

It is an amenable number.

128543716 is an abundant number, since it is smaller than the sum of its proper divisors (128919644).

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

128543716 is a wasteful number, since it uses less digits than its factorization.

128543716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6723 (or 6721 counting only the distinct ones).

The product of its digits is 40320, while the sum is 37.

The square root of 128543716 is about 11337.7121148846. The cubic root of 128543716 is about 504.6809944897.

The spelling of 128543716 in words is "one hundred twenty-eight million, five hundred forty-three thousand, seven hundred sixteen".