128855206 has 8 divisors (see below), whose sum is σ = 204652440. Its totient is φ = 60637728.

The previous prime is 128855203. The next prime is 128855239. The reversal of 128855206 is 602558821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×128855206² = 33207328226604872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128855203) 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, 1894896 + ... + 1894963.

It is an arithmetic number, because the mean of its divisors is an integer number (25581555).

Almost surely, 2^128855206 is an apocalyptic number.

128855206 is a deficient number, since it is larger than the sum of its proper divisors (75797234).

128855206 is a wasteful number, since it uses less digits than its factorization.

128855206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789878.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 128855206 is about 11351.4407015145. The cubic root of 128855206 is about 505.0883170702.

The spelling of 128855206 in words is "one hundred twenty-eight million, eight hundred fifty-five thousand, two hundred six".