1728479 has 4 divisors (see below), whose sum is σ = 1733376. Its totient is φ = 1723584.

The previous prime is 1728457. The next prime is 1728481. The reversal of 1728479 is 9748271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1728479 - 2¹⁶ = 1662943 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 (1728409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1874 + ... + 2639.

It is an arithmetic number, because the mean of its divisors is an integer number (433344).

2^1728479 is an apocalyptic number.

1728479 is a deficient number, since it is larger than the sum of its proper divisors (4897).

1728479 is an equidigital number, since it uses as much as digits as its factorization.

1728479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4896.

The product of its digits is 28224, while the sum is 38.

The square root of 1728479 is about 1314.7163192111. The cubic root of 1728479 is about 120.0110869386.

The spelling of 1728479 in words is "one million, seven hundred twenty-eight thousand, four hundred seventy-nine".