2020845 has 16 divisors (see below), whose sum is σ = 3254400. Its totient is φ = 1070784.

The previous prime is 2020831. The next prime is 2020853. The reversal of 2020845 is 5480202.

2020845 is nontrivially palindromic in base 4.

It is not a de Polignac number, because 2020845 - 2¹⁴ = 2004461 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 0 + 2¹¹ + 0 + 8 + 4⁸ + 5⁹ .

It is a Curzon number.

It is a congruent number.

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, 2647 + ... + 3323.

It is an arithmetic number, because the mean of its divisors is an integer number (203400).

2^2020845 is an apocalyptic number.

It is an amenable number.

2020845 is a deficient number, since it is larger than the sum of its proper divisors (1233555).

2020845 is a wasteful number, since it uses less digits than its factorization.

2020845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 2020845 is about 1421.5642792361. The cubic root of 2020845 is about 126.4283106017.

The spelling of 2020845 in words is "two million, twenty thousand, eight hundred forty-five".