1722273 has 8 divisors (see below), whose sum is σ = 2624448. Its totient is φ = 984144.

The previous prime is 1722251. The next prime is 1722283. The reversal of 1722273 is 3722271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1722273 - 2⁵ = 1722241 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1722283) 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, 40986 + ... + 41027.

It is an arithmetic number, because the mean of its divisors is an integer number (328056).

2^1722273 is an apocalyptic number.

It is an amenable number.

1722273 is a deficient number, since it is larger than the sum of its proper divisors (902175).

1722273 is an equidigital number, since it uses as much as digits as its factorization.

1722273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82023.

The product of its digits is 1176, while the sum is 24.

The square root of 1722273 is about 1312.3539918787. The cubic root of 1722273 is about 119.8672838298.

The spelling of 1722273 in words is "one million, seven hundred twenty-two thousand, two hundred seventy-three".