2001730 has 16 divisors (see below), whose sum is σ = 3680640. Its totient is φ = 783472.

The previous prime is 2001721. The next prime is 2001731. The reversal of 2001730 is 371002.

It is a super-3 number, since 3×2001730³ = 24062333887733151000, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2001730.

It is not an unprimeable number, because it can be changed into a prime (2001731) 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, 1660 + ... + 2599.

It is an arithmetic number, because the mean of its divisors is an integer number (230040).

2^2001730 is an apocalyptic number.

2001730 is a deficient number, since it is larger than the sum of its proper divisors (1678910).

2001730 is a wasteful number, since it uses less digits than its factorization.

2001730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 2001730 is about 1414.8250775273. The cubic root of 2001730 is about 126.0284222436.

Adding to 2001730 its reverse (371002), we get a palindrome (2372732).

The spelling of 2001730 in words is "two million, one thousand, seven hundred thirty".