1722741 has 8 divisors (see below), whose sum is σ = 2336160. Its totient is φ = 1128912.

The previous prime is 1722739. The next prime is 1722751. The reversal of 1722741 is 1472271.

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

It is not a de Polignac number, because 1722741 - 2¹ = 1722739 is a prime.

1722741 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4690 + ... + 5043.

It is an arithmetic number, because the mean of its divisors is an integer number (292020).

2^1722741 is an apocalyptic number.

It is an amenable number.

1722741 is a deficient number, since it is larger than the sum of its proper divisors (613419).

1722741 is an equidigital number, since it uses as much as digits as its factorization.

1722741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9795.

The product of its digits is 784, while the sum is 24.

The square root of 1722741 is about 1312.5322853172. The cubic root of 1722741 is about 119.8781401823.

The spelling of 1722741 in words is "one million, seven hundred twenty-two thousand, seven hundred forty-one".