1728873 has 6 divisors (see below), whose sum is σ = 2497274. Its totient is φ = 1152576.

The previous prime is 1728871. The next prime is 1728889. The reversal of 1728873 is 3788271.

It can be written as a sum of positive squares in only one way, i.e., 1617984 + 110889 = 1272^2 + 333^2 .

It is not a de Polignac number, because 1728873 - 2¹ = 1728871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1728871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 96040 + ... + 96057.

2^1728873 is an apocalyptic number.

It is an amenable number.

1728873 is a deficient number, since it is larger than the sum of its proper divisors (768401).

1728873 is a wasteful number, since it uses less digits than its factorization.

1728873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192103 (or 192100 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 1728873 is about 1314.8661528840. The cubic root of 1728873 is about 120.0202049311.

It can be divided in two parts, 1728 and 873, that added together give a square (2601 = 51²).

The spelling of 1728873 in words is "one million, seven hundred twenty-eight thousand, eight hundred seventy-three".