1730 has 8 divisors (see below), whose sum is σ = 3132. Its totient is φ = 688.

The previous prime is 1723. The next prime is 1733. The reversal of 1730 is 371.

1730 = 6² + 7² + ... + 17².

1730 is nontrivially palindromic in base 9 and base 14.

1730 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1681 + 49 = 41^2 + 7^2 .

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

1730 is an undulating number in base 14.

1730 is strictly pandigital in base 5.

It is a Curzon number.

It is a plaindrome in base 11.

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 1730.

It is not an unprimeable number, because it can be changed into a prime (1733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77 + ... + 96.

1730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1730 is a deficient number, since it is larger than the sum of its proper divisors (1402).

1730 is a wasteful number, since it uses less digits than its factorization.

1730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180.

The product of its (nonzero) digits is 21, while the sum is 11.

The square root of 1730 is about 41.5932686862. The cubic root of 1730 is about 12.0046278447.

The spelling of 1730 in words is "one thousand, seven hundred thirty".