1728227 has 4 divisors (see below), whose sum is σ = 1734096. Its totient is φ = 1722360.

The previous prime is 1728193. The next prime is 1728229. The reversal of 1728227 is 7228271.

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 1728227 - 2⁶ = 1728163 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 1728227.

It is not an unprimeable number, because it can be changed into a prime (1728229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2468 + ... + 3089.

It is an arithmetic number, because the mean of its divisors is an integer number (433524).

2^1728227 is an apocalyptic number.

1728227 is a deficient number, since it is larger than the sum of its proper divisors (5869).

1728227 is an equidigital number, since it uses as much as digits as its factorization.

1728227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5868.

The product of its digits is 3136, while the sum is 29.

The square root of 1728227 is about 1314.6204775524. The cubic root of 1728227 is about 120.0052543996.

The spelling of 1728227 in words is "one million, seven hundred twenty-eight thousand, two hundred twenty-seven".