128538006 has 16 divisors (see below), whose sum is σ = 257203200. Its totient is φ = 42824808.

The previous prime is 128537989. The next prime is 128538013. The reversal of 128538006 is 600835821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12375 + ... + 20253.

It is an arithmetic number, because the mean of its divisors is an integer number (16075200).

Almost surely, 2^128538006 is an apocalyptic number.

128538006 is an abundant number, since it is smaller than the sum of its proper divisors (128665194).

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

128538006 is a wasteful number, since it uses less digits than its factorization.

128538006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10603.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 128538006 is about 11337.4602976152. The cubic root of 128538006 is about 504.6735216205.

The spelling of 128538006 in words is "one hundred twenty-eight million, five hundred thirty-eight thousand, six".