1728901 has 8 divisors (see below), whose sum is σ = 1827584. Its totient is φ = 1632960.

The previous prime is 1728889. The next prime is 1728907. The reversal of 1728901 is 1098271.

1728901 is nontrivially palindromic in base 6.

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 1728901 - 2⁷ = 1728773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1728901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728907) 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, 685 + ... + 1981.

It is an arithmetic number, because the mean of its divisors is an integer number (228448).

2^1728901 is an apocalyptic number.

It is an amenable number.

1728901 is a deficient number, since it is larger than the sum of its proper divisors (98683).

1728901 is a wasteful number, since it uses less digits than its factorization.

1728901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1728901 is about 1314.8768003125. The cubic root of 1728901 is about 120.0208528576.

The spelling of 1728901 in words is "one million, seven hundred twenty-eight thousand, nine hundred one".