1730730 has 32 divisors (see below), whose sum is σ = 4290048. Its totient is φ = 446400.

The previous prime is 1730723. The next prime is 1730741. The reversal of 1730730 is 370371.

1730730 is a nontrivial binomial coefficient, being equal to C(1861, 2).

It is a junction number, because it is equal to n+sod(n) for n = 1730697 and 1730706.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1 + ... + 1860.

It is an arithmetic number, because the mean of its divisors is an integer number (134064).

2^1730730 is an apocalyptic number.

1730730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1730730 is the 1860-th triangular number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1730730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2145024).

1730730 is an abundant number, since it is smaller than the sum of its proper divisors (2559318).

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

1730730 is a wasteful number, since it uses less digits than its factorization.

1730730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902.

The product of its (nonzero) digits is 441, while the sum is 21.

The square root of 1730730 is about 1315.5721188897. The cubic root of 1730730 is about 120.0631611941.

The spelling of 1730730 in words is "one million, seven hundred thirty thousand, seven hundred thirty".