2021404304 has 40 divisors (see below), whose sum is σ = 4051850040. Its totient is φ = 976256000.

The previous prime is 2021404279. The next prime is 2021404309. The reversal of 2021404304 is 4034041202.

It can be written as a sum of positive squares in 4 ways, for example, as 1081600 + 2020322704 = 1040^2 + 44948^2 .

It is not an unprimeable number, because it can be changed into a prime (2021404309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51002 + ... + 81510.

It is an arithmetic number, because the mean of its divisors is an integer number (101296251).

Almost surely, 2^2021404304 is an apocalyptic number.

It is an amenable number.

2021404304 is an abundant number, since it is smaller than the sum of its proper divisors (2030445736).

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

2021404304 is a wasteful number, since it uses less digits than its factorization.

2021404304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30659 (or 30653 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2021404304 is about 44960.0300711643. The cubic root of 2021404304 is about 1264.3997327040.

Adding to 2021404304 its reverse (4034041202), we get a palindrome (6055445506).

The spelling of 2021404304 in words is "two billion, twenty-one million, four hundred four thousand, three hundred four".