128685016 has 16 divisors (see below), whose sum is σ = 241404840. Its totient is φ = 64310400.

The previous prime is 128684987. The next prime is 128685017. The reversal of 128685016 is 610586821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128685017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28720 + ... + 32896.

Almost surely, 2^128685016 is an apocalyptic number.

It is an amenable number.

128685016 is a deficient number, since it is larger than the sum of its proper divisors (112719824).

128685016 is a wasteful number, since it uses less digits than its factorization.

128685016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8034 (or 8030 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 128685016 is about 11343.9418193148. The cubic root of 128685016 is about 504.8658481030.

The spelling of 128685016 in words is "one hundred twenty-eight million, six hundred eighty-five thousand, sixteen".