1728343 has 8 divisors (see below), whose sum is σ = 1802240. Its totient is φ = 1655640.

The previous prime is 1728341. The next prime is 1728361. The reversal of 1728343 is 3438271.

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 1728343 - 2¹ = 1728341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3718 + ... + 4156.

It is an arithmetic number, because the mean of its divisors is an integer number (225280).

2^1728343 is an apocalyptic number.

1728343 is a deficient number, since it is larger than the sum of its proper divisors (73897).

1728343 is a wasteful number, since it uses less digits than its factorization.

1728343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597.

The product of its digits is 4032, while the sum is 28.

The square root of 1728343 is about 1314.6645960092. The cubic root of 1728343 is about 120.0079392895.

It can be divided in two parts, 1728 and 343, that multiplied together give a cube (592704 = 84³).

The spelling of 1728343 in words is "one million, seven hundred twenty-eight thousand, three hundred forty-three".