1729722 has 16 divisors (see below), whose sum is σ = 3641760. Its totient is φ = 546192.

The previous prime is 1729711. The next prime is 1729723. The reversal of 1729722 is 2279271.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1729722.

It is not an unprimeable number, because it can be changed into a prime (1729723) 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, 7473 + ... + 7700.

It is an arithmetic number, because the mean of its divisors is an integer number (227610).

2^1729722 is an apocalyptic number.

1729722 is an abundant number, since it is smaller than the sum of its proper divisors (1912038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1729722 is a wasteful number, since it uses less digits than its factorization.

1729722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15197.

The product of its digits is 3528, while the sum is 30.

The square root of 1729722 is about 1315.1889598077. The cubic root of 1729722 is about 120.0398478775.

The spelling of 1729722 in words is "one million, seven hundred twenty-nine thousand, seven hundred twenty-two".