1728201 has 8 divisors (see below), whose sum is σ = 2311200. Its totient is φ = 1148672.

The previous prime is 1728193. The next prime is 1728229. The reversal of 1728201 is 1028271.

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 1728201 - 2³ = 1728193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1721201) 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, 706 + ... + 1988.

It is an arithmetic number, because the mean of its divisors is an integer number (288900).

2^1728201 is an apocalyptic number.

It is an amenable number.

1728201 is a deficient number, since it is larger than the sum of its proper divisors (582999).

1728201 is a wasteful number, since it uses less digits than its factorization.

1728201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1728201 is about 1314.6105887296. The cubic root of 1728201 is about 120.0046525974.

The spelling of 1728201 in words is "one million, seven hundred twenty-eight thousand, two hundred one".