2020404 has 24 divisors (see below), whose sum is σ = 4763808. Its totient is φ = 666400.

The previous prime is 2020393. The next prime is 2020409. The reversal of 2020404 is 4040202.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 2020404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020409) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 379 + ... + 2045.

It is an arithmetic number, because the mean of its divisors is an integer number (198492).

2^2020404 is an apocalyptic number.

It is an amenable number.

2020404 is an abundant number, since it is smaller than the sum of its proper divisors (2743404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2020404 is a wasteful number, since it uses less digits than its factorization.

2020404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775 (or 1773 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 2020404 is about 1421.4091599536. The cubic root of 2020404 is about 126.4191133037.

Adding to 2020404 its reverse (4040202), we get a palindrome (6060606).

The spelling of 2020404 in words is "two million, twenty thousand, four hundred four".