128791206 has 12 divisors (see below), whose sum is σ = 279047652. Its totient is φ = 42930396.

The previous prime is 128791189. The next prime is 128791207. The reversal of 128791206 is 602197821.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128791207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3577516 + ... + 3577551.

It is an arithmetic number, because the mean of its divisors is an integer number (23253971).

Almost surely, 2^128791206 is an apocalyptic number.

128791206 is an abundant number, since it is smaller than the sum of its proper divisors (150256446).

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

128791206 is a wasteful number, since it uses less digits than its factorization.

128791206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7155075 (or 7155072 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 128791206 is about 11348.6213259585. The cubic root of 128791206 is about 505.0046805435.

The spelling of 128791206 in words is "one hundred twenty-eight million, seven hundred ninety-one thousand, two hundred six".