2000729 has 4 divisors (see below), whose sum is σ = 2004660. Its totient is φ = 1996800.

The previous prime is 2000717. The next prime is 2000731. The reversal of 2000729 is 9270002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1261129 + 739600 = 1123^2 + 860^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2000729 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2000729.

It is not an unprimeable number, because it can be changed into a prime (2000029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (501165).

2^2000729 is an apocalyptic number.

It is an amenable number.

2000729 is a deficient number, since it is larger than the sum of its proper divisors (3931).

2000729 is an equidigital number, since it uses as much as digits as its factorization.

2000729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3930.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2000729 is about 1414.4712793125. The cubic root of 2000729 is about 126.0074111707.

The spelling of 2000729 in words is "two million, seven hundred twenty-nine", and thus it is an aban number.