169728385 has 8 divisors (see below), whose sum is σ = 212529600. Its totient is φ = 129879024.

The previous prime is 169728367. The next prime is 169728407. The reversal of 169728385 is 583827961.

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

It is a cyclic number.

It is not a de Polignac number, because 169728385 - 2²³ = 161339777 is a prime.

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, 737835 + ... + 738064.

It is an arithmetic number, because the mean of its divisors is an integer number (26566200).

Almost surely, 2^169728385 is an apocalyptic number.

It is an amenable number.

169728385 is a deficient number, since it is larger than the sum of its proper divisors (42801215).

169728385 is a wasteful number, since it uses less digits than its factorization.

169728385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475927.

The product of its digits is 725760, while the sum is 49.

The square root of 169728385 is about 13027.9846868194. The cubic root of 169728385 is about 553.6706381586.

The spelling of 169728385 in words is "one hundred sixty-nine million, seven hundred twenty-eight thousand, three hundred eighty-five".