128988607 has 16 divisors (see below), whose sum is σ = 146966400. Its totient is φ = 112131040.

The previous prime is 128988599. The next prime is 128988619. The reversal of 128988607 is 706889821.

It is a cyclic number.

It is not a de Polignac number, because 128988607 - 2³ = 128988599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128988637) 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, 32244 + ... + 36022.

It is an arithmetic number, because the mean of its divisors is an integer number (9185400).

Almost surely, 2^128988607 is an apocalyptic number.

128988607 is a deficient number, since it is larger than the sum of its proper divisors (17977793).

128988607 is a wasteful number, since it uses less digits than its factorization.

128988607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3926.

The product of its (nonzero) digits is 387072, while the sum is 49.

The square root of 128988607 is about 11357.3151316673. The cubic root of 128988607 is about 505.2625592808.

The spelling of 128988607 in words is "one hundred twenty-eight million, nine hundred eighty-eight thousand, six hundred seven".