1728273 has 8 divisors (see below), whose sum is σ = 2360736. Its totient is φ = 1124000.

The previous prime is 1728269. The next prime is 1728317. The reversal of 1728273 is 3728271.

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 1728273 - 2² = 1728269 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1728273.

It is not an unprimeable number, because it can be changed into a prime (1728253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6903 + ... + 7148.

It is an arithmetic number, because the mean of its divisors is an integer number (295092).

2^1728273 is an apocalyptic number.

It is an amenable number.

1728273 is a deficient number, since it is larger than the sum of its proper divisors (632463).

1728273 is a wasteful number, since it uses less digits than its factorization.

1728273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14095.

The product of its digits is 4704, while the sum is 30.

The square root of 1728273 is about 1314.6379729796. The cubic root of 1728273 is about 120.0063191117.

The spelling of 1728273 in words is "one million, seven hundred twenty-eight thousand, two hundred seventy-three".