168128270 has 16 divisors (see below), whose sum is σ = 302784048. Its totient is φ = 67217280.

The previous prime is 168128267. The next prime is 168128281. The reversal of 168128270 is 72821861.

It is a self number, because there is not a number n which added to its sum of digits gives 168128270.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28517 + ... + 33903.

It is an arithmetic number, because the mean of its divisors is an integer number (18924003).

Almost surely, 2^168128270 is an apocalyptic number.

168128270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168128270 is a deficient number, since it is larger than the sum of its proper divisors (134655778).

168128270 is a wasteful number, since it uses less digits than its factorization.

168128270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8515.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 168128270 is about 12966.4285753634. The cubic root of 168128270 is about 551.9252309812.

The spelling of 168128270 in words is "one hundred sixty-eight million, one hundred twenty-eight thousand, two hundred seventy".