1728859668 has 24 divisors (see below), whose sum is σ = 4034688000. Its totient is φ = 576189120.

The previous prime is 1728859667. The next prime is 1728859747. The reversal of 1728859668 is 8669588271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728859667) by changing a digit.

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, 114208 + ... + 128456.

It is an arithmetic number, because the mean of its divisors is an integer number (168112000).

Almost surely, 2^1728859668 is an apocalyptic number.

It is an amenable number.

1728859668 is an abundant number, since it is smaller than the sum of its proper divisors (2305828332).

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

1728859668 is a wasteful number, since it uses less digits than its factorization.

1728859668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24367 (or 24365 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 60.

The square root of 1728859668 is about 41579.5582949122. The cubic root of 1728859668 is about 1200.1989642314.

The spelling of 1728859668 in words is "one billion, seven hundred twenty-eight million, eight hundred fifty-nine thousand, six hundred sixty-eight".