404223040020 has 48 divisors (see below), whose sum is σ = 1131853242240. Its totient is φ = 107790074496.

The previous prime is 404223040019. The next prime is 404223040027. The reversal of 404223040020 is 20040322404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404223040027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3637846 + ... + 3747314.

It is an arithmetic number, because the mean of its divisors is an integer number (23580275880).

Almost surely, 2^404223040020 is an apocalyptic number.

It is an amenable number.

404223040020 is an abundant number, since it is smaller than the sum of its proper divisors (727630202220).

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

404223040020 is a wasteful number, since it uses less digits than its factorization.

404223040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171024 (or 171022 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 21.

Adding to 404223040020 its reverse (20040322404), we get a palindrome (424263362424).

The spelling of 404223040020 in words is "four hundred four billion, two hundred twenty-three million, forty thousand, twenty".