2020904 has 16 divisors (see below), whose sum is σ = 3815700. Its totient is φ = 1003392.

The previous prime is 2020891. The next prime is 2020913. The reversal of 2020904 is 4090202.

It can be written as a sum of positive squares in 2 ways, for example, as 1932100 + 88804 = 1390^2 + 298^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452 + ... + 2060.

2^2020904 is an apocalyptic number.

It is an amenable number.

2020904 is a deficient number, since it is larger than the sum of its proper divisors (1794796).

2020904 is a wasteful number, since it uses less digits than its factorization.

2020904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772 (or 1768 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2020904 is about 1421.5850308722. The cubic root of 2020904 is about 126.4295409777.

The spelling of 2020904 in words is "two million, twenty thousand, nine hundred four".