404404000028 has 24 divisors (see below), whose sum is σ = 812339925600. Its totient is φ = 172559158848.

The previous prime is 404404000027. The next prime is 404404000037. The reversal of 404404000028 is 820000404404.

It is a junction number, because it is equal to n+sod(n) for n = 404403999970 and 404404000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404404000027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31528523 + ... + 31541346.

It is an arithmetic number, because the mean of its divisors is an integer number (33847496900).

Almost surely, 2^404404000028 is an apocalyptic number.

It is an amenable number.

404404000028 is an abundant number, since it is smaller than the sum of its proper divisors (407935925572).

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

404404000028 is a wasteful number, since it uses less digits than its factorization.

404404000028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63070109 (or 63070107 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 26.

The spelling of 404404000028 in words is "four hundred four billion, four hundred four million, twenty-eight", and thus it is an aban number.