2030721 has 32 divisors (see below), whose sum is σ = 3456000. Its totient is φ = 1030080.

The previous prime is 2030719. The next prime is 2030731. The reversal of 2030721 is 1270302.

It is not a de Polignac number, because 2030721 - 2¹ = 2030719 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2030721.

It is not an unprimeable number, because it can be changed into a prime (2030711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13555 + ... + 13703.

It is an arithmetic number, because the mean of its divisors is an integer number (108000).

2^2030721 is an apocalyptic number.

2030721 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2030721 is a deficient number, since it is larger than the sum of its proper divisors (1425279).

2030721 is a wasteful number, since it uses less digits than its factorization.

2030721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229.

The product of its (nonzero) digits is 84, while the sum is 15.

The square root of 2030721 is about 1425.0336838124. The cubic root of 2030721 is about 126.6339304445.

The spelling of 2030721 in words is "two million, thirty thousand, seven hundred twenty-one".