404323110020 has 24 divisors (see below), whose sum is σ = 860709746904. Its totient is φ = 159513774336.

The previous prime is 404323110011. The next prime is 404323110041. The reversal of 404323110020 is 20011323404.

It can be written as a sum of positive squares in 4 ways, for example, as 50951044 + 404272158976 = 7138^2 + 635824^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 404323109974 and 404323110001.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138465359 + ... + 138468278.

It is an arithmetic number, because the mean of its divisors is an integer number (35862906121).

Almost surely, 2^404323110020 is an apocalyptic number.

It is an amenable number.

404323110020 is an abundant number, since it is smaller than the sum of its proper divisors (456386636884).

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

404323110020 is a wasteful number, since it uses less digits than its factorization.

404323110020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276933719 (or 276933717 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 404323110020 its reverse (20011323404), we get a palindrome (424334433424).

The spelling of 404323110020 in words is "four hundred four billion, three hundred twenty-three million, one hundred ten thousand, twenty".