2020305 has 32 divisors (see below), whose sum is σ = 3760128. Its totient is φ = 907200.

The previous prime is 2020279. The next prime is 2020309. The reversal of 2020305 is 5030202.

It is not a de Polignac number, because 2020305 - 2¹³ = 2012113 is a prime.

2020305 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2020309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7320 + ... + 7590.

It is an arithmetic number, because the mean of its divisors is an integer number (117504).

2^2020305 is an apocalyptic number.

It is an amenable number.

2020305 is a deficient number, since it is larger than the sum of its proper divisors (1739823).

2020305 is a wasteful number, since it uses less digits than its factorization.

2020305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 2020305 is about 1421.3743349308. The cubic root of 2020305 is about 126.4170484202.

Adding to 2020305 its reverse (5030202), we get a palindrome (7050507).

The spelling of 2020305 in words is "two million, twenty thousand, three hundred five".